Different Theme For User and Admin

[studiobl]

I want to use the gallery simply to display images and descriptions.  I don't want the users to have any extraneous links: admin mode, upload file, none of that stuff.  However, I still need a usable admin section with all of the relevant buttons. 

Is there a way to have two themes, one for users and one for admin.  Or any other way to disable most of the buttons in the user mode?

I searched for an answer to this in previous posts, but didn't have much luck.

[Nibbler]

Disable the features you don't need and disable user registrations if you don't need users to have accounts.

[studiobl]

I don't see where to disable user registration.  I looked in (among other places) config/user settings

[Nibbler]

Read the manual, config section.