I have a server TS3 with Guild Launch. I tried to find a way to create an automatic AFK server (where someone is moved after a certain amount of time) or at least some kind of features that kick out of the server people that idled for a long period of time. I have look everywhere but cannit find any help and the only feature I found was a bot, which I doubt Guild Launch would let us play in the server script.
You should be able to set an idle time by permission group on the Permissions -> Server Groups area of your server. For each permission group, you can set i_client_max_idletime to a certain number of seconds. After that period of time, idle users will be kicked from actively being connected.