Tournament one sit out

How to play in tournament if there are only four left. Three person will get price and one person sit out and don't play (sit out mode).
Should the other three help each other to get the person how has left the computer out of the tournament?

That's what I would do, don't play hard untill the sitter is out

You might be able to organise it with other 2, but if i was in final 4 i'd be looking to win (especially if there is a large prize spike from 4th to 1st). I wouldn't really care who come second. Also you'd be trusting complete strangers to co-operate, and you could be folding AA, KK while they're folding junk.

Steal the blinds more when sitter is BB/SB, treat the game generally as 3-handed with a bigger ante than usual. Nobody is under any obligation either rules-wise or etiquette-wise to soft-play until the sitter is gone.

played a 45 seater sit and go at pokerstars a few weeks ago, came into the top 4 with a sitter when one guy suggested folding out to the button, and every turn after. Youd be mad not to agree, we all were about even chip stack, it worked well.

Didnt really like the morals of it though, but what do you do ?