Give to the person you want to have ops on th channel access with friend and op flags (+fo) and enable the bitch mode for that channel using chanset. See .help chanset and .help chaninfo for more info about the channel mode and .help +user or .help adduser and.help chattr for the user flags part.
Once the game is over, the king and the pawn go back in the same box.
i doesn't work always... why... i gave to all i want to have ops +afo... then i type .chanset #channel+bitch and some of them my bot automatixly deoped... ???
If the +bitch mode dosen't suit your needs then get a superbitch or another script designed to do this job. Also, do note that the +a flag means autoop so, be shure what hosts the users that have the +a flag may have. I doubt you want another user to match one of your +a user(s).
Once the game is over, the king and the pawn go back in the same box.
You can add a user with a static hostmask when using .adduser by prefixing their nick with '!'. For example, with a hostmask of drummer!ident@some.host.com: