The entire purpose of a calendar is to remind us when events are, but if you don’t look at it, how will you know when you are scheduled to do something. The problem with maintaining several calendars is remembering to look at them. Personal, business, extracurricular activities and even organization activities had to be accounted for and I prefer to keep each separate.
‘For many years, I have juggled several calendars. Blotter for Mac OS helps juggle your schedules from your desktop.