Only preformed by the creator or admin of a group. Usually involves inviting them with a group request. Then when they accept and you find they will cause trouble within the group you ban them.
Thus preforming the art of moncing.
"Why have you banned me Emelda?"
"I didn't trust you in the group with my friends"
"so you're moncing me then?"
"yes I am do you have a problem with that?"