Change Existing Owners, Editors, and Viewers on Google Sites

Is a teacher or staff member leaving and you need to transfer ownership of their OLD Google Sites? That is now possible with the click of a button using GAT+. Click on an existing owner or editor of a site to add or remove existing owners, editors or viewers from this site.
New Sites are handled as G Suite Drive files and using GATs existing file ownership changing powers there, you can change ownership and access to new Sites.

Add permissions with GAT