This is probably really simple, but I can't figure it out - when I'm in my database, I have to go into Layout mode to manage the database, accounts, etc. The option doesn't show up in my file menu, and the icon on my status toolbar is dimmed. When the other full access account user in my office goes into the same database, that's not the case. What am I missing?!

That is weird: could you have custom menus in place?