How can I set a certain user as an admin?

Sign in to your Revest Suite online account.
From the left side menu, select the Users / Servers option
From the left side of the Manage Users/Servers page, select the All Users option.
Click the Action icon () for the user you want set as admin → Manage Users → Set Admin.
From the confirmation box that will appear, you can edit the privileges given to this new admin, by clicking the Edit Admin Privileges link.