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Symptom

Users see the Gantt chart but cannot edit items — dragging, resizing, and the Edit button are disabled. The Gantt displays a reviewer-level interface without editing controls.

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Step 1: Verify the User Group Configuration

The Gantt determines edit access based on membership in a specific Polarion user group.
  1. Navigate to Global Administration > User Management > Users
  2. Verify that a group called nextedy_gantt_users exists
  3. Add all users who need edit access to this group
GroupAccess LevelCapabilities
nextedy_gantt_users memberFull editDrag tasks, resize bars, create items, save changes
Not in groupReviewer onlyView-only access, no editing
Even if a user has full Polarion project permissions, they need to be in the nextedy_gantt_users group to edit items in the Gantt widget. This is a Gantt-specific permission layer separate from Polarion’s standard role-based access.

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Step 2: Reload Licenses

After updating the user group, you must reload the Gantt licenses for the changes to take effect:
  1. Navigate to the Nextedy Gantt - License page in Polarion administration
  2. The page automatically reloads all active licenses and applies the updated user access rights
  3. Ask affected users to refresh their browser page
Simply adding users to the nextedy_gantt_users group is not enough. You must visit the license page to trigger a license reload. Without this step, the permission change will not be applied.

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Step 3: Verify User Access

Ask the affected user to:
  1. Refresh the Gantt page in their browser
  2. Check that the Edit button appears in the toolbar
  3. Click Edit and verify that task bars become draggable

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Verify

After completing these steps, you should now see the Edit button in the Gantt toolbar. Clicking it should enable full editing mode, allowing you to drag task bars, resize durations, create dependency links, and save changes.

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See also

KB ArticlesSupport Tickets