I am trying to make an animation of a briefcase lock where the lock spins to a code then the briefcase opens. How do I make the cylinder locks spin on their own but then move with the top of the briefcase when it opens? Thanks.
You should Shift+Click on all your cylinders first and then on the top of the briefcase lastly to make it the active object. Then press P to Parent all the objects you selected to the last one you clicked (the top of the briefcase). This will let you move the briefcase without affecting the individual transformations.