changing playoff format from 4 to 6 teams

Im the comissioner of a 12 man league in yahoo fantasy and want to change the number of teams from 4 to 6. I tried league settings and comissioner tools already and couldnt find out how to do it.

Thanks so much for your help

it might be something you can't change this late

Originally posted by teeohh:
it might be something you can't change this late