I was listening to the Effective Meetings Starter Model (part 1 and 2) and I truly understand the need for meetings to begin on time to set the tone. In my organization it is not uncommon (more uncommon for the preceding group to finish on time) for a group to run over and hold a meeting room hostage for 5 to 10 minutes into the next groups booked time. How do I handle this so that their ineffective meeting habits do not bleed over into my reserved time. Because this is a consistent problem I want a good way to handle this so that I can clear the room of the previous meeting so my meeting can begin, even though they havent finished. I want people to expect for my meeting to start on time and to honour their allotted time that they scheduled for the room.