FILTER CHANNEL SA

This command controls who may set a room to be filtered for profanity. It can be set to ALL, NONE, CHANOP, IRCOP, SA, or ADMIN. If it is set to all then all rooms will be filtered. If it is set to none then no rooms will be filtered. The sa option causes only +L rooms to be filtered and allows services administrators to set a room +L..

Example:
/as filter channel sa

This gives a moderate number of people the ability to filter rooms. But room filtering will probably still be somewhat uncommon. This is good if you want it only to be set occasionally, but to still have a decent number of people able to set it when they think it appropriate.