[Ilmar_]

Можно. Создаете канал, ставите на него пароль. Подробности (англ.)

/joinchannel <name> [password]' will create a channel (or join, if already existing) in the next free slot
/leavechannel <name>' will exit a user channel, if already in it
/userchat# <msg>' or '/uc# <msg>' will send a message to the channel of the slot specified
/userchat <name> <msg>' or '/uc <name> <msg>' will send a message to the named chat channel if you're already a member of that channel
You can also use /1, /2, /3, or /4 to talk in your user-defined chat channels.