Fundraising group interview, What are the comon questions? What does it consist of?

Hello I've got an interview in two weeks and i'm told to prepare for a group interview for a fundraising company....what is that all about? I mean I had a group interview before for a p.a managerial role, but I don't know how to prepare for this.HAS ANYBODY GOT A RECENT EXPERIENCE TO SHARE? COULD YOU PLEASE HELP?