Giving Delegates access

[Jivonne]

I need to be able to set a user as a delegate but it's not
giving them full control. There is another person set as
the delegate of the same person's calendar and it works
fine. I tried removing her so there would only be one
person and it still doesnt work. When I try to give this
other person access it says she does not have enough
permission to access his calendar even though I give her
full control. She can see the calendar but when she
scrolls down an error message comes up saying she does not
have full permission to view it.

Can someone help

Thanks.