How can I view the history of a Moment?

From the Onsite Editor:

1. Navigate to the gray "Customization" icon beside a Moment
2. Click “History” on the top bar of the customization panel
3. Here you will be able to access all past versions and see dates of previous changes made
4. If you would like to revert to a previous version, select that desired version in the list, and click on “Revert.