In my office, we use a shared calendar to keep track of various things, like software release dates, vacations, etc. In Outlook, users can just subscribe to the shared calendar and add appointments directly.

I'm on a mac, and I can subscribe to the calendar in iCal, but it's a read-only view. Do I have any option for adding appointments to the calendar?

I'd rather not use the web interface, but I don't even see a way to do it there.

We're on ZCS 4.5.10_GA_1575.RHEL4_20071116233533 CentOS4 NETWORK edition