diff --git a/src/plugins/inspectorViews/elements/ElementItem.vue b/src/plugins/inspectorViews/elements/ElementItem.vue
index f668f6b8b2..e2770b1646 100644
--- a/src/plugins/inspectorViews/elements/ElementItem.vue
+++ b/src/plugins/inspectorViews/elements/ElementItem.vue
@@ -45,6 +45,7 @@
         :object-path="[elementObject, domainObject]"
         @context-click-active="setContextClickState"
       />
+      <slot name="content"></slot>
     </div>
   </li>
 </template>
diff --git a/src/plugins/inspectorViews/elements/ElementsPool.vue b/src/plugins/inspectorViews/elements/ElementsPool.vue
index 06ee6de757..b465c9cbf0 100644
--- a/src/plugins/inspectorViews/elements/ElementsPool.vue
+++ b/src/plugins/inspectorViews/elements/ElementsPool.vue
@@ -42,7 +42,11 @@
           :allow-drop="allowDrop"
           @dragstart-custom="moveFrom(index)"
           @drop-custom="moveTo(index)"
-        />
+        >
+          <template #content="slotProps">
+            <slot name="content" :index="index" :object="element" v-bind="slotProps"></slot>
+          </template>
+        </ElementItem>
         <li class="js-last-place" @drop="moveToIndex(elements.length)"></li>
       </ul>
       <div v-if="elements.length === 0">No contained elements</div>
diff --git a/src/plugins/inspectorViews/elements/ElementsViewProvider.js b/src/plugins/inspectorViews/elements/ElementsViewProvider.js
index ce9748861a..dc66f3a3b1 100644
--- a/src/plugins/inspectorViews/elements/ElementsViewProvider.js
+++ b/src/plugins/inspectorViews/elements/ElementsViewProvider.js
@@ -29,6 +29,7 @@ export default function ElementsViewProvider(openmct) {
     key: 'elementsView',
     name: 'Elements',
     canView: function (selection) {
+      // TODO - only use this view provider if another custom provider has not been applied
       const hasValidSelection = selection?.length;
       const isOverlayPlot = selection?.[0]?.[0]?.context?.item?.type === 'telemetry.plot.overlay';
 
diff --git a/src/plugins/timeline/TimelineElementsContent.vue b/src/plugins/timeline/TimelineElementsContent.vue
new file mode 100644
index 0000000000..4c38750e1b
--- /dev/null
+++ b/src/plugins/timeline/TimelineElementsContent.vue
@@ -0,0 +1,82 @@
+<template>
+  <template v-if="fixed">
+    <input
+      :value="size"
+      aria-labelledby="pixelSize"
+      class="field control"
+      :pattern="/\d+/"
+      type="number"
+      name="value"
+      min="0"
+      @change="changeSize"
+    />
+    <span>px</span>
+  </template>
+  <select v-model="isFixed" aria-label="fixedOrFlex">
+    <option :selected="!isFixed" :value="false">flex</option>
+    <option :selected="isFixed" :value="true">fixed</option>
+  </select>
+</template>
+<script>
+import { computed, inject, ref, toRaw } from 'vue';
+
+export default {
+  props: {
+    object: {
+      type: Object,
+      required: true
+    },
+    index: {
+      type: Number,
+      required: true
+    }
+  },
+  setup(props) {
+    const openmct = inject('openmct');
+    const domainObject = inject('domainObject');
+
+    openmct.objects.observe(domainObject, 'configuration.containers', updateContainer);
+
+    const container = ref(null);
+    const fixed = computed(() => {
+      return container.value?.fixed;
+    });
+    const isFixed = computed({ get: () => fixed, set: (_isFixed) => toggleFixed(_isFixed) });
+    const size = computed(() => container.value?.size);
+
+    function toggleFixed(_fixed) {
+      openmct.objectViews.emit(
+        `contextAction:${openmct.objects.makeKeyString(domainObject.identifier)}`,
+        'toggleFixedContextAction',
+        props.index,
+        _fixed
+      );
+    }
+
+    function changeSize(event) {
+      const _size = Number(event.target.value);
+      openmct.objectViews.emit(
+        `contextAction:${openmct.objects.makeKeyString(domainObject.identifier)}`,
+        'changeSizeContextAction',
+        props.index,
+        _size
+      );
+    }
+
+    function updateContainer(containers) {
+      container.value = containers[props.index];
+    }
+
+    return {
+      openmct,
+      domainObject,
+      container,
+      fixed,
+      isFixed,
+      size,
+      updateContainer,
+      changeSize
+    };
+  }
+};
+</script>
diff --git a/src/plugins/timeline/TimelineElementsPool.vue b/src/plugins/timeline/TimelineElementsPool.vue
new file mode 100644
index 0000000000..43c9e3df2a
--- /dev/null
+++ b/src/plugins/timeline/TimelineElementsPool.vue
@@ -0,0 +1,21 @@
+<template>
+  <ElementsPool>
+    <template #content="{ index, object }">
+      <TimelineElementsContent :index="index" :object="object" />
+    </template>
+  </ElementsPool>
+</template>
+<script>
+import ElementsPool from '@/plugins/inspectorViews/elements/ElementsPool.vue';
+
+import TimelineElementsContent from './TimelineElementsContent.vue';
+export default {
+  components: {
+    ElementsPool,
+    TimelineElementsContent
+  },
+  setup() {
+    return {};
+  }
+};
+</script>
diff --git a/src/plugins/timeline/TimelineElementsViewProvider.js b/src/plugins/timeline/TimelineElementsViewProvider.js
new file mode 100644
index 0000000000..73b5023915
--- /dev/null
+++ b/src/plugins/timeline/TimelineElementsViewProvider.js
@@ -0,0 +1,76 @@
+/*****************************************************************************
+ * Open MCT, Copyright (c) 2014-2024, United States Government
+ * as represented by the Administrator of the National Aeronautics and Space
+ * Administration. All rights reserved.
+ *
+ * Open MCT is licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ * Open MCT includes source code licensed under additional open source
+ * licenses. See the Open Source Licenses file (LICENSES.md) included with
+ * this source code distribution or the Licensing information page available
+ * at runtime from the About dialog for additional information.
+ *****************************************************************************/
+
+import mount from 'utils/mount';
+
+import TimelineElementsPool from './TimelineElementsPool.vue';
+
+export default function TimelineElementsViewProvider(openmct) {
+  return {
+    key: 'timelineElementsView',
+    name: 'Elements',
+    canView: function (selection) {
+      return selection?.[0]?.[0]?.context?.item?.type === 'time-strip';
+    },
+    view: function (selection) {
+      let _destroy = null;
+
+      const domainObject = selection?.[0]?.[0]?.context?.item;
+
+      return {
+        show: function (element) {
+          const { destroy } = mount(
+            {
+              el: element,
+              components: {
+                TimelineElementsPool
+              },
+              provide: {
+                openmct,
+                domainObject
+              },
+              template: `<TimelineElementsPool />`
+            },
+            {
+              app: openmct.app,
+              element
+            }
+          );
+          _destroy = destroy;
+        },
+        showTab: function (isEditing) {
+          const hasComposition = Boolean(domainObject && openmct.composition.get(domainObject));
+
+          return hasComposition && isEditing;
+        },
+        priority: function () {
+          return openmct.priority.HIGH - 1;
+        },
+        destroy: function () {
+          if (_destroy) {
+            _destroy();
+          }
+        }
+      };
+    }
+  };
+}
diff --git a/src/plugins/timeline/TimelineObjectView.vue b/src/plugins/timeline/TimelineObjectView.vue
index 7d3db098d5..e1afbc3035 100644
--- a/src/plugins/timeline/TimelineObjectView.vue
+++ b/src/plugins/timeline/TimelineObjectView.vue
@@ -32,7 +32,8 @@
     :hide-button="!item.isEventTelemetry"
     :button-click-on="enableExtendEventLines"
     :button-click-off="disableExtendEventLines"
-    :style="[{ 'flex-basis': sizeString }]"
+    :class="sizeClass"
+    :style="sizeStyle"
   >
     <template #label>
       {{ item.domainObject.name }}
@@ -64,12 +65,12 @@ export default {
       type: Object,
       required: true
     },
-    extendedLinesBus: {
+    container: {
       type: Object,
       required: true
     },
-    size: {
-      type: Number,
+    extendedLinesBus: {
+      type: Object,
       required: true
     }
   },
@@ -81,8 +82,17 @@ export default {
     };
   },
   computed: {
-    sizeString() {
-      return `${this.size}%`;
+    size() {
+      return this.container.size;
+    },
+    fixed() {
+      return this.container.fixed;
+    },
+    sizeClass() {
+      return `--${this.fixed ? 'fixed' : 'scales'}`;
+    },
+    sizeStyle() {
+      return `flex-basis: ${this.size}${this.fixed ? 'px' : '%'}`;
     }
   },
   watch: {
diff --git a/src/plugins/timeline/TimelineViewLayout.vue b/src/plugins/timeline/TimelineViewLayout.vue
index a41c89a5d5..1b8382bb32 100644
--- a/src/plugins/timeline/TimelineViewLayout.vue
+++ b/src/plugins/timeline/TimelineViewLayout.vue
@@ -47,7 +47,7 @@
         <TimelineObjectView
           class="c-timeline__content js-timeline__content"
           :item="item"
-          :size="getContainerSize(item)"
+          :container="containers[index]"
           :extended-lines-bus
         />
         <ResizeHandle
@@ -156,7 +156,9 @@ export default {
       containers,
       startContainerResizing,
       containerResizing,
-      endContainerResizing
+      endContainerResizing,
+      toggleFixed,
+      sizeFixedContainer
     } = useFlexContainers(timelineHolder, {
       containers: domainObject.configuration.containers,
       rowsLayout: true,
@@ -167,13 +169,22 @@ export default {
       composition.value = loadedComposition;
       isCompositionLoaded = true;
 
+      // check if containers configuration matches composition
+      // in case composition has been modified outside of view
+      // if so, rebuild containers to match composition
       // sync containers to composition,
       // in case composition modified outside of view
       // but do not mutate until user makes a change
-      composition.value.forEach((object) => {
+      let isConfigurationChanged = false;
+      composition.value.forEach((object, index) => {
         const containerIndex = domainObject.configuration.containers.findIndex((container) =>
           openmct.objects.areIdsEqual(container.domainObjectIdentifier, object.identifier)
         );
+
+        if (containerIndex !== index) {
+          isConfigurationChanged = true;
+        }
+
         if (containerIndex > -1) {
           existingContainers.push(domainObject.configuration.containers[containerIndex]);
         } else {
@@ -182,7 +193,13 @@ export default {
         }
       });
 
-      setContainers(existingContainers);
+      // add check for total size not equal to 100? if comp and containers same, probably safe
+
+      if (isConfigurationChanged) {
+        console.log('yo');
+        setContainers(existingContainers);
+        mutateContainers();
+      }
     });
 
     function addItem(_domainObject) {
@@ -267,6 +284,16 @@ export default {
       openmct.objects.mutate(domainObject, 'configuration.containers', containers.value);
     }
 
+    // context action called from outside component
+    function toggleFixedContextAction(index, fixed) {
+      toggleFixed(index, fixed);
+    }
+
+    // context action called from outside component
+    function changeSizeContextAction(index, size) {
+      sizeFixedContainer(index, size);
+    }
+
     onBeforeUnmount(() => {
       compositionCollection.off('add', addItem);
       compositionCollection.off('remove', removeItem);
@@ -292,7 +319,9 @@ export default {
       startContainerResizing,
       containerResizing,
       endContainerResizing,
-      mutateContainers
+      mutateContainers,
+      toggleFixedContextAction,
+      changeSizeContextAction
     };
   },
   data() {
diff --git a/src/plugins/timeline/TimelineViewProvider.js b/src/plugins/timeline/TimelineViewProvider.js
index b76409057f..3bb43875d3 100644
--- a/src/plugins/timeline/TimelineViewProvider.js
+++ b/src/plugins/timeline/TimelineViewProvider.js
@@ -61,7 +61,8 @@ export default function TimelineViewProvider(openmct, extendedLinesBus) {
                   isEditing
                 };
               },
-              template: '<timeline-view-layout :is-editing="isEditing"></timeline-view-layout>'
+              template:
+                '<timeline-view-layout ref="timeline" :is-editing="isEditing"></timeline-view-layout>'
             },
             {
               app: openmct.app,
@@ -71,6 +72,11 @@ export default function TimelineViewProvider(openmct, extendedLinesBus) {
           component = vNode.componentInstance;
           _destroy = destroy;
         },
+        contextAction(action, ...args) {
+          if (component?.$refs?.timeline?.[action]) {
+            component.$refs.timeline[action](...args);
+          }
+        },
         onEditModeChange(isEditing) {
           component.isEditing = isEditing;
         },
diff --git a/src/plugins/timeline/plugin.js b/src/plugins/timeline/plugin.js
index f0fd2294f7..9704fd7234 100644
--- a/src/plugins/timeline/plugin.js
+++ b/src/plugins/timeline/plugin.js
@@ -23,9 +23,9 @@
 import { configuration } from './configuration.js';
 import ExtendedLinesBus from './ExtendedLinesBus.js';
 import TimelineCompositionPolicy from './TimelineCompositionPolicy.js';
+import TimelineElementsViewProvider from './TimelineElementsViewProvider.js';
 import timelineInterceptor from './timelineInterceptor.js';
 import TimelineViewProvider from './TimelineViewProvider.js';
-
 const extendedLinesBus = new ExtendedLinesBus();
 
 export { extendedLinesBus };
@@ -48,6 +48,7 @@ export default function () {
     openmct.composition.addPolicy(new TimelineCompositionPolicy(openmct).allow);
 
     openmct.objectViews.addProvider(new TimelineViewProvider(openmct, extendedLinesBus));
+    openmct.inspectorViews.addProvider(new TimelineElementsViewProvider(openmct));
   }
 
   install.extendedLinesBus = extendedLinesBus;
diff --git a/src/plugins/timeline/timeline.scss b/src/plugins/timeline/timeline.scss
index dc81b19676..b83c64ea32 100644
--- a/src/plugins/timeline/timeline.scss
+++ b/src/plugins/timeline/timeline.scss
@@ -45,6 +45,18 @@
     }
   }
 
+  &__content {
+    &.--scales {
+      flex-grow: 1;
+      flex-shrink: 1;
+    }
+
+    &.--fixed {
+      flex-grow: 0;
+      flex-shrink: 0;
+    }
+  }
+
   &__overlay-lines {
     @include abs();
     opacity: 0.5;
diff --git a/src/utils/vue/useFlexContainers.js b/src/utils/vue/useFlexContainers.js
index 0475c70fd2..f2d68c59f2 100644
--- a/src/utils/vue/useFlexContainers.js
+++ b/src/utils/vue/useFlexContainers.js
@@ -89,7 +89,9 @@ export function useFlexContainers(
     const beforeContainer = getBeforeContainer(index);
     const afterContainer = getAfterContainer(index);
 
-    maxMoveSize.value = beforeContainer.size + afterContainer.size;
+    if (beforeContainer && afterContainer && !beforeContainer.fixed && !afterContainer.fixed) {
+      maxMoveSize.value = beforeContainer.size + afterContainer.size;
+    }
   }
 
   function getBeforeContainer(index) {
@@ -108,24 +110,14 @@ export function useFlexContainers(
     const afterContainer = getAfterContainer(index);
     const percentageMoved = Math.round((delta / getElSize()) * 100);
 
-    if (beforeContainer === undefined || afterContainer === undefined) {
+    if (beforeContainer && afterContainer && !beforeContainer.fixed && !afterContainer.fixed) {
+      beforeContainer.size = getContainerSize(beforeContainer.size + percentageMoved);
+      afterContainer.size = getContainerSize(afterContainer.size - percentageMoved);
+    } else {
       console.warn(
-        'Cannot drag to resize a single flex sized containers. Use Elements Tab in Inspector to resize fixed containers.'
+        'Drag requires two flexible containers. Use Elements Tab in Inspector to resize.'
       );
-
-      return;
     }
-
-    if (beforeContainer.fixed === true && afterContainer.fixed === true) {
-      console.warn(
-        'Cannot drag to resize two fixed sized containers. Use Elements Tab in Inspector to resize.'
-      );
-
-      return;
-    }
-
-    beforeContainer.size = getContainerSize(beforeContainer.size + percentageMoved);
-    afterContainer.size = getContainerSize(afterContainer.size - percentageMoved);
   }
 
   function endContainerResizing() {
@@ -163,45 +155,92 @@ export function useFlexContainers(
    * due to composition edits outside of view
    *
    * @param {*} items
+   * @param {Number} (optional) index of the item to apply excess to in the event of rounding errors
    */
-  function sizeItems(items) {
+  function sizeItems(items, index) {
     let totalSize;
-    const itemsWithSize = items.filter((item) => item.size);
-    const itemsWithoutSize = items.filter((item) => !item.size);
-    // total number of items, adjusted by each item scale
-    const totalScale = items.reduce((total, item) => {
+    const flexItems = items.filter((item) => !item.fixed);
+    const flexItemsWithSize = flexItems.filter((item) => item.size);
+    const flexItemsWithoutSize = flexItems.filter((item) => !item.size);
+    // total number of flexible items, adjusted by each item scale
+    const totalScale = flexItems.reduce((total, item) => {
       const scale = item.scale ?? 1;
       return total + scale;
     }, 0);
 
-    itemsWithoutSize.forEach((item) => {
+    flexItemsWithoutSize.forEach((item) => {
       const scale = item.scale ?? 1;
       item.size = Math.round((100 * scale) / totalScale);
     });
 
-    totalSize = items.reduce((total, item) => total + item.size, 0);
+    totalSize = flexItems.reduce((total, item) => total + item.size, 0);
 
     if (totalSize > 100) {
-      const addedSize = itemsWithoutSize.reduce((total, item) => total + item.size, 0);
+      const addedSize = flexItemsWithoutSize.reduce((total, item) => total + item.size, 0);
       const remainingSize = 100 - addedSize;
 
-      itemsWithSize.forEach((item) => {
+      flexItemsWithSize.forEach((item) => {
         const scale = item.scale ?? 1;
         item.size = Math.round((item.size * scale * remainingSize) / 100);
       });
     } else if (totalSize < 100) {
       const sizeToFill = 100 - totalSize;
 
-      items.forEach((item) => {
+      flexItems.forEach((item) => {
         const scale = item.scale ?? 1;
         item.size = Math.round((item.size * scale * 100) / sizeToFill);
       });
     }
 
     // Ensure items add up to 100 in case of rounding error.
-    totalSize = items.reduce((total, item) => total + item.size, 0);
+    totalSize = flexItems.reduce((total, item) => total + item.size, 0);
     const excess = Math.round(100 - totalSize);
-    items[items.length - 1].size += excess;
+
+    if (excess) {
+      const _index = index !== undefined && !items[index].fixed ? index : items.length - 1;
+      items[_index].size += excess;
+    }
+  }
+
+  function toggleFixed(index, fixed) {
+    let addExcessToContainer;
+    const remainingItems = containers.value.slice();
+    const container = remainingItems.splice(index, 1)[0];
+
+    if (container.fixed !== fixed) {
+      if (fixed) {
+        const sizeToFill = 100 - container.size;
+        container.size = Math.round((container.size / 100) * getElSize());
+        remainingItems.forEach((item) => {
+          const scale = item.scale ?? 1;
+          item.size = Math.round((item.size * scale * 100) / sizeToFill);
+        });
+      } else {
+        container.size = Math.round((container.size * 100) / (getElSize() + container.size));
+        addExcessToContainer = index;
+        const remainingSize = 100 - container.size;
+        remainingItems.forEach((item) => {
+          const scale = item.scale ?? 1;
+          item.size = Math.round((item.size * scale * remainingSize) / 100);
+        });
+      }
+
+      container.fixed = fixed;
+      sizeItems(containers.value, addExcessToContainer);
+      callback?.();
+    }
+  }
+
+  function sizeFixedContainer(index, size) {
+    const container = containers.value[index];
+
+    if (container.fixed) {
+      container.size = size;
+
+      callback?.();
+    } else {
+      console.warn('Use view drag resizing to resize flexible containers.');
+    }
   }
 
   return {
@@ -212,6 +251,8 @@ export function useFlexContainers(
     containers,
     startContainerResizing,
     containerResizing,
-    endContainerResizing
+    endContainerResizing,
+    toggleFixed,
+    sizeFixedContainer
   };
 }