TOPIC: Change layout of Signature and Participants list

Is there some place (a layout file somewhere or such) that I can customize the Signature List and the Participants List (available from the Bookings view)?
I need to have a slightly different layout AND I'd really need to have the signature list have a line for each of the 'other places' that are booked (i.e. I need EVERYONE to be able to sign-in). And I need to know the 'type' of bookings for each.
Is there any way to do this?

Hi. This is something that I was also looking for. Now there is now where to find out the participant if someone have booked several in same booking. Yes you have the number but no names that they have filled in when booked. Is this rather a wishlist thing or a bug? Or is there some way to fixit by our self…