Caroline & Mssrs Padfoot & Prongs
I'll do as many as you like, so long as you get signatures for everyone being tracked. I'll give you paper (charmed against forging) to collect the signatures, and then you can tell me however you want them arranged onto the clocks. Sound good?
There are less than twelve people from my home world here right now, so far as I know. So there'd be room for everyone to bring other friends. I'll see what the others think.