The staff is 'making preparations' to move to another building. [=the staff is doing things to become ready to move to another building]
To complete this recipe, plan on about 30 minutes of 'preparation' and 40 minutes of baking.
Plans for the next edition are already 'in preparation'. [=are already being prepared/made]
(..) for the creation of a new race of aliens? By co-operating we hasten our own demise. It's the only chance of saving ourselves. They still need us to make their preparations. We'll continue to use them as they do us, if only to get more time to work... ...on our vaccine. (..)1998 The X Files