In Gantt, it is possible to restrict the editing based on the roles. This can be done by using the beginEdit and taskbarEditing events. The event will be triggered while enter the edit mode in the TreeGrid cell and the event will be triggered while dragging and resizing the taskbar in Gantt chart. please refer the following code example for this.
In the above sample we have restricted both taskbar editing and cell editing when the role is not ‘Project Manager’.
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