All users (except collaborators) can edit Gantt chart snapshots.
Navigate to a folder, project, or space and switch to Gantt Chart.
Click Snapshots on the panel above the timeline.
You’ll see a list with the titles of that folder, project, or space's previous snapshots. If no snapshots had been created, then you’ll only see the option to create a new snapshot.
Hover over the snapshot you want to edit and click the three-dot menu.
Select the Edit option from the list.
From here you can:
Rename a snapshot.
Show or hide assignees’ names from a snapshot.
Enable or disable the option to share the snapshot via a link.
Click Save once you make the necessary changes.