It would drive me crazy to have other people schedule me for phone calls and meetings, yet that is what routinely happens for some general counsel.
To be master of my calendar matters to me, an independent consultant, but once you reach a certain level of heavy time commitments, with multiple demands for the same hours, and frequent juggles of time, other people have to tend to your comings and goings, your sittings and talkings. Some general counsel make their schedule available on a department-wide calendar. Most rely on their trusted gatekeeper and timer (See my post of Sept. 5, 2007: have a good administrative assistant.).