Snapshots - how do I name them?

Hi
I am using snapshots for a few scenes and am playing around with the options in the document text.

Can I change the title of the Snapshot? If so, how do I do that? If I right click on ‘title’ I just get the ‘rollback’ or ‘delete’ options. I am using Windows 10.

It also seems to have a ‘Pre-Sync External Version’ in some of the snapshots - what does that mean and should that be happening automatically?

Thanks

Ensure that the ‘Snapshot with title’ icon is on your toolbar (via the ‘Customize Toolbars’ option).

Click on it and when the box opens, give it a name.