Anyone Succesfully Using Google Calendar?

We decided to use Google calendar to post work schedules for our yarn store, but it doesn’t seem to work. The “editors” can see the entries but the people we are sharing with can’t. A “known bugs” list says to unshare and re-share the calendar, but there doesn’t seem to be a way to unshare or remove people we added to the share list. Not too impressive so far.

Anyone having luck with it? Is there a better web-based calendar that will allow us to post and share staff schedules, store events, etc.?