I have used gmail for some time now for both my email and my calendar. When I got my iMac, I got all my gmail stuff to work. Email through my iMail tool and calendar through my iCalendar tool. Then I got my iPad, and got everything working on that as well. Once I was done, I was able to view my calendar, my daughters, and my wife's calendar on my Android phone, my PCs, my iMac and my iPad. Recently, my step daughter sent me the invite to view her calendar as well, but I can't seem to get it to show up on the iPad. I have looked back at how they are set up on the iMac, and it is set by going to accounts and then the delegates tab. That all makes sense now, but the iPad does not have the same sort of settings (at least I don't think it does). I just a few minutes ago set my stepdaughters calendar as a delegate on the iMac. I wonder if I need to delete my calendar info and set it up again from scratch? I'm looking for thoughts that I may have not thought of before resorting to the delete and re-add route.