Need Help With Barclays GRCB Finance Scheme Final Interview! Anyone who has attended already pls help!

Hey guys, I have been invited to the final round assessment for Barclays GRCB - Finance Scheme. I was hoping that someone may have already attended and may have some helpful tips and more details as to what the exercises actually entail. The email I got said that my timetable will include the following activities:

 1)At large interview 2)Competency based interview 3)Group exercise 4)Paper based numerical test 5)Presentation to prepare under time constraints on the day and present back 6)Role play exercise 7)Building tour

Any help would be greatly appreciated! I was hoping someone would be kind enough to go through the details of the group exercise, role play exercise and the presentation. In terms, of what it is about, how much time, and other such things.

Thanks!!!