Originally Posted by tsac
Can another user access Google Calendar? It sounds like he wants to automatically and remotely update another users calendar. If so thats a good option.
In Google Calendar, you can "subscribe" to other people's calendars in your own, then sync your calender with the BB. So a 2nd user could subscribe to someone's calendar where they update things. However if the person updated something on the BB, it would just be on their calendar and not make it back to the first.
If someone has PC access to someone else's Google Calendar, then of course there are no problems maintaining it both ways.