Functor is terrible. It is awful, indignant, talentless noise made by bigoted, loud mouth, idiots.
One time three assholes went to a concert, it was ill repute or despise you or something. Who cares. It became blatantly obvious that anyone could pretend they're in a metal band, and that they could make fat stacks off this 'grindcore' scam.
They were right. Thus Functor, if not aborted, should have been murdered hastily after it's miserable birth, was bestowed the holy breath of life.
Within a month it was painfully obvious to the most disabled retards, they weren't annoying nearly enough people. No one cares who said it, but, one of those assholes was like "maybe we need a self Rightious pothead who doesn't give a hobo's shit about metal in the band". The other guys were like "fuck you, you're gay". So he found one anyways. Now there's four idiots making the same stupid garbage music.
For physical events that happen at a specific time. For example a concert, or dance performance. If there are multiple shows, you can still duplicate your event to cover them all.