Just picked up my new 700p yesterday and set up some speed dial contacts on it last night. I made a mistake on one contact, however, and I need to edit, but I can't figure out how to access the info on a speed dial to edit once it has been assigned to a button (if that makes sense). (Detail: I am actually trying to rename a speed dial button, or maybe delete it completely)

I'm probably missing something obvious. Can anyone help? Thanks!