I am wondering how do I create a sub group within the ribbon. Basically, I want a Main group call REPORT, then when I click on it, a list of reports is listed then I can click on one of the reports then execute that report, my Ribbon is running out of room and I like tidy it up. Just to make it interesting, how about a group within a group (I don't need it now, but I may in the future). I would like this to be created with Excel.

Thanks