This is how to use Move/ Copy features
select Insert> Features> Move/Copy Body
Option 1: Using Standard mate, in your case, use distance mate, select body to move, and select Face to mate
Option 2: In Move/Body features, scroll down at bottom, you will see button named "Translate/Rotate". Click the button
and then, choose either using "Translate" along axis, or "Rotate" along axis.