Google calendar setup

There are some things to note when setting up the calendars using google apps, especially if you're trying to work with more than one domain as I am.

Sharing calendars

Viewing another users' original calendar can be added in the 'Add a friend's calendar' box, but it's possible to share secondary calendars that users create by sending out a link with the calendar's address.

There's also the question of whether such shared calednars show as 'my calendars' or in the 'other calendars' pane. I think the issue is determined by whether you give permissions for the other user to manage the sharing on that calendar, not whether the users happens to be an apps admin as some suggest (eg here). I'll report back on this after more experience.