you can't reduce the minimim number of players unfortunately, the only thing you can do is to cancel the old match and start a new one with the same team and set the minimum number of players again
Players Per Team

Thanks lona,
But what about the registered players in the team. Do we have to open a new registration again for a new/fresh enrollment.

Thanks for your comments lona. I have posted a fresh registration for all with the same Match Name and the same Team to challenge :)

I think the best thing to do when we want to organize any match, just stated the minimum players 1+ That will be easier I suppossed

You can deside to reduce your number of players by push the red/white cross..very often S.A ask me to be more equal by reduce or to pick out stronger players. I prefer not to take out players. But I just tell you, that you are able to align the strenght of two teams by doing so. You don't have to make a new match:))
How to Change or to reduce the number of players already set in "Players Per Team". I as a Super Admin for my team set the number of Players Per Team: 25+ and our team managed to get more than 25 registrants and I lock our team ready for the match.
Unfortunately, our opponent unable to lock as their team only managed to secure 13 registrants and unable to fill the quota required. Their Group Leader contacted me said that they still wanted to proceed with the match and so suggested that if I could reduce/change the number of quota stated from 25+ to 1+ or 13 in order for them to be able to lock their team to start with the match.
I do not know how to reduce/change the already set quota (Players Per Team) . Please, help!
Thank you.