To set up a user as an administrator who can access menu sets, the document store, workflows, data exports, etc., within the Admin Tool, an existing administrator must follow these steps.
In the Admin Tool, click User Accounts.
Search for the user who is supposed to have Administrator rights.
Click Edit the selected user, then expand Administrator Application Security.
Change the User Level to Administrator.
Select the appropriate (if not all) administrator functions.
If no functions are ticked, this is when a user will see the white/blank screen appear when they log into the Admin Tool.
🎥 For a visual walkthrough, please view the following video.