Moving is not only applicable for homes but also for offices. The number of people in the office can be both a boon or a bane in moving as it means more hands to help but more minds with different views.
This is the very reason why announcing the move is very important. Set a meeting to announce the date of the move. It may be tentative, it may change but a date is a date and it will give people enough time to prepare themselves, their stuff and everything else in between.
Showing the new place or at an outline or floor plan of the new place helps a lot. This will give the main idea on how the new place will look like and so on.Personal items will be packed by individuals while desks, cabinets and so on needs to be handles by a moving company.