Self-explanatory.
Mock: https://meta.wikimedia.org/wiki/Community_Tech/Grant_metrics_tool#/media/File:Update_event.png
Self-explanatory.
Mock: https://meta.wikimedia.org/wiki/Community_Tech/Grant_metrics_tool#/media/File:Update_event.png
Done with the work for T179549 (create/edit forms and form handling mostly share the same code)