You can change the password for users of your app. First open the App Users section in the Studio and search for the person you want to change the password for in the search bar. If you don't know how to do that, click here.
Now click on the Change Password button next to the person's overview.
A new window will open where you can enter the new password. Alternatively, you can set a random password by clicking Generate Random Password. Click Copy Password to copy the password. Click Save and Close to complete your change.
Important: Users will not be notified about the changes. Please inform the person yourself by email if necessary.