…an see you today if you asked me yesterday, but I can’t fill up my schedule any further in advance. This way he can determine how he wants to spend his time within the context of the next 24 hours instead of booking things weeks or months in the future. Now his schedule is relevant instead of prescient.
Some employees aren’t aware of the impact they have on other team members and interrupt them frequently with one quick question or worse. Encourage your team to prefer communication in roughly the following order so that interruptions are minimized: e-mail, chat room (if your team isn’t using a chat room yet, they should be), instant message, phone call/dropping by in person.