This command will cause the bot assigned to your channel to issue a Ctcp action command to the channel. This command takes 2 arguments, the name of the channel and the text to send to the channel. To have ChanServ perform the action "gives everyone coffee" in #lobby, use the following command:
/BotServ act #lobby gives everyone coffee
Note that you must be on the channel's access list with sufficient privileges to be able to use this command.