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How No-Allocation Marking Works

When a task has no assignee, the Gantt chart applies two visual indicators:
  1. Red task bar background — the task bar in the Gantt chart receives a red highlight, making it immediately distinguishable from assigned tasks
  2. Grey resource view cell — in the resource view, cells for unallocated tasks display with a grey background instead of the usual green or red allocation markers
These indicators help project managers quickly spot work items that need assignment during planning sessions.
Task StateTask BarResource View Cell
Assigned, within capacityStandard colorGreen marker
Assigned, overallocatedStandard colorRed marker
No assignee (active)Red highlightGrey cell
No assignee, status DoneStandard color (no highlight)No indicator
Tasks with a Done status are exempt from the no-allocation marking even if they have no resource assignment. This prevents completed items from cluttering the view with false warnings.

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Step 1: Enable the Resource View

To see both the task bar and resource view indicators, enable the resource view in your Gantt widget parameters:
  1. Open the Gantt widget parameters
  2. Set Show Resource View to Yes
  3. Configure the Resource Field (defaults to assignee)

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Step 2: Enable the Show Unassigned Row

To see unallocated tasks grouped in the resource view:
  1. In the widget parameters, set Show Unassigned to Yes
  2. This adds a dedicated row in the resource view for all work items that have no value in the resource field
If you use the Hide Inactive Resources feature, the Unassigned row remains visible as long as there are unassigned tasks, making it easy to spot items needing attention.

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Step 3: Review Unallocated Tasks

With the configuration in place:
  1. Open the Gantt chart and look for task bars highlighted in red — these are tasks without an assignee
  2. Check the resource view for grey cells indicating unallocated time periods
  3. Open any highlighted task in the lightbox to assign a resource
diagram
Work items that are filtered from the task list but not hidden may still contribute to resource view markers. If you see unexpected grey cells, check your active filters to ensure items are not being filtered out of the task view while remaining in resource calculations.
If you use team assignments, ensure all team assignment work items are properly linked to their parent team. Unlinked team assignments can cause grey capacity indicators that appear similar to the no-allocation markers but indicate a configuration issue rather than a missing assignee.

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Verification

You should now see:
  • Task bars with no assignee highlighted in red in the Gantt chart
  • Grey cells in the resource view for unallocated time periods
  • Completed (Done) tasks displaying normally without the red highlight, even if they have no assignee

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See Also

KB ArticlesSupport TicketsSource Code
  • prod-gantt-src/com.nextedy.polarion.gantt.client/cypress/e2e/view/markTasksWithNoAllocation.cy.ts
  • prod-gantt-src/com.nextedy.polarion.gantt/src/com/nextedy/polarion/gantt/model/Task.java
  • prod-gantt-src/com.nextedy.polarion.gantt.client/cypress/e2e/Aresource-view/ganttOveralocation.cy.ts
  • prod-gantt-src/com.nextedy.polarion.gantt.client/src/js/config.js
  • prod-gantt-src/com.nextedy.polarion.gantt.client/cypress/e2e/filterByResourceMarker/OnItemCount.cy.ts