Management access (view and add) to calendars

Question

I've done some research on this, and groups and calendar sharing don't quite seem to handle this properly for our needs...
We have a simple hierarchy in that people on higher levels need the ability to view and add to tasks and appointments of those who report to them.
So if Mr. Blue reports to Mr. Red, then Mr. Red as the ability to view Mr. Blue's calendar and tasks, as well as give him new appointments and tasks. But I don't want to create team calendars for this and I don't want to give Mr. Blue the same access to Mr. Red's calendar and tasks.
Similarly, we have admins who need this type of access as well.
How can we configure CRM on Demand to fulfill this requirement?

Answer 1

Create a list in Activities called My Team's Tasks/Appointments. In the user profile make sure you specify Mr. Blue Reports to Mr. Red.
Then Mr. Red will be able to see all his direct report's tasks. But Mr. Red's boss will not be able to see all Mr. Blue's tasks (Someone correct me if am wrong)
Another way is sharing calendars. Mr. Blue Can share his calendar with Mr. Red, so Mr. red can see all of Mr. Blue's Appointments.
Hope this helps.