I have a situation I was wondering if I could get some help with...

Joe smith's secretary in San Antonio asked me to find out how to solve a problem they are having. I have rights to joe smith's calendar to make entries. However, I don't want to "accept" entries because when I do, he gets an e-mail that I have accepted them and he doesn't want that. I suspect it's a function of two separate problems: first, if his secretary in San Antonio puts something on his calendar, I should not need to accept it, since it's already on there and I am merely accepting on his behalf, which is unnecessary. Secondly, he must have asked for an e-mail receipt for these items. I think if we disabled either one of those things, he would not be getting those e-mails.

Is there any way to set a rule to stop him from recieving these reciepts?