ugmc
Server console only. Players cannot run it.
Switch command
SetswitchCommand to let players go back to the selection themselves:
config.lua
/logout saves and unloads the character, then plays a short intro back onto the lineup. A downed or dead character stays downed or dead, and goes back where it was when chosen again. A new name needs a restart of the resource.
From another resource
Send a player back to the selection from your own server code withExecuteCommand(('ugmc reopen %d'):format(source)). ugmc is restricted, so your resource needs the ACE:
server.cfg