Like Stella Said

One of the most frustrating things about being a key decision maker or trying to get a meeting with key decision makers is that they're often booked from now until the next fiscal year. Getting time with people is almost impossible.

Now note how Google does it: office hours. Marissa Mayer of Google has time every day where people can line up outside her door and come in on an ad hoc basis. I have long held that this kind of "free to meet" time is essential to a smooth operation. Much like a pediatrician has time every day to see emergently sick children, having time available daily (or even weekly) that isn't already booked that can be used for issues that are arising is a good idea.