As a lawyer, one of the only ways to carve off a little personal space in your day is to place a few fake meetings on your calendar and disappear during such times. The best way to do this is to title the fake meeting with a four letter abbreviation such as "HGFY - Meeting" or "PFNB - Meeting." It can be any four letters, but it is important to use the abbreviation rather than an actual name because it provides those who manage your schedule with some plausible deniability as to where you are. I typically use these fake meeting timeslots to satisfy basic human needs like eating.