The only requirements are a name and a position. The rest is fun and I will try to get as many of these in as I can. You should be able to exit and re enter a second player after you've completed so on.
PLEASE DO NOT SUBMIT ACTUAL PEOPLE YOU KNOW, OR YOURSELF. It does not sit right with me, I would prefer to not use actual people. Now, you can be inspired by someone you know or use a first or last name of course, but just try to refrain from directly submitting a someone you know, that would be greatly appreciated. This also goes from submitting people or characters directly from other media, whether it be shows, movies, books, or games, etc.