For someone else to get access to Zalster, you need to make sure they have Admin or Employee access in your Business Manager and Admin Access to the Ad Account in question.
Just to clarify:
The employee/team member can have either Employee Access or Admin Access in the Business Manager that you use. However, it's mandatory that the user also has admin access on the Ad Account in question in order to be able to access Zalster. Therefore, standard access to the Ad Account in any form won’t work.
As soon as you've done this they should be able to login to their first Zalster session at app.zalster.com 💫