group calendar

i don't understand why the group calendar is so weak in comparison to the features of the personal calendar?

it'd be nice to be able to automatically make items on the group calendar 'all-day events' and also to disable email notifications for new events added to the group calendar

also, is there a way to disable the group notifications? we have our secretary importing our google calender manually (because you can't import it automatically like you can in the personal calendar) and we're getting flooded with emails for everything she's adding.