I added another calendar as we have a business. This way I can have my personal events on one calendar and my tasks for our business on the Work calendar. I have shared my "work" calendar with partner & events with employees (as needed). I like the idea of having multiple calendars with different sharing options. All of which I can share at the same time.
I also like the option of dimming past events & repeating events. That way if something fun comes out during my YWCA workout, I can prioritize easily.