Allow admin to impersonate user
As an administrator, I'd like to be able to impersonate a normal user so I can see what they see when they log in.
Currently, the only way to test the active directory groups is to walk over to a users desk and ask them to log in to verify they can't see what they shouldn't.
Gitlab is a good example of a product that allows for admin impersonating.

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Mauro Andrea commented
Also if you allow to log in using an API Key, we, the admins, could create API Keys for those users we need to test and log in using that
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Spencer Owen commented
As an administrator, I'd like to be able to impersonate a normal user so I can see what they see when they log in.
Currently, the only way to test the active directory groups is to walk over to a users desk and ask them to log in to verify they can't see what they shouldn't.
Gitlab is a good example of a product that allows for admin impersonating.