Around here managers love to reserve the available meeting rooms for pretty much everything they can, it goes like this:
Manager:
"There was an important change in requirements, all the members of the team must attend"
= Irrelevant field needs to be increased in size but as I'm a massive waste of resources for the company, making people waste their time makes me look like I'm doing something, oh and I feel important.
=> 8 hours meeting
=> "Don't worry about the already idiotic/impossible to fulfill scheduled I made. I'll do my project magic, so you guys won't have to run -more- at the end"
= Manager wastes 1 entire week playing with project.
=> New meeting: All of you screwed up, project is heavily delayed. It has nothing to do with all those useless meetings I make you do that take countless hours and are never considered in the schedule... don't mind that the sum of all those hours easily exceed the delay. And because all of you are a bunch of nonproductive code monkeys, you'll have to work a retarded amount of extra hours that won't be payed (because it's your fault).
=> Even more meetings to ensure the "proper progress" of the project.