Men don't use mends forums. This is why it's actually a waste to have them. I've seen on multiple Christian forum sites where the mens forums started with talk of sports and cars and porn, then died out shortly after being started.
This has been requested repeatedly, as another user stated, it's not going to happen.
There is an option for private groups. Just a week or two ago i suggested to someone to start their own private mens group, due to a similar request. They did. I joined and it's already dying, last i checked. There was another about a year or so ago. Dead as well.
There have been multiple mens groups made, but they all meet the same fate. Death. Private groups are lucky to get a month of activity before they dry up. This goes for private groups in general, not just mens.
If the group is set to private only people approved can join, or read, what is said in them.
There is a womens forum, but it's... only for women. It does have a waiting period after joining to be granted access to them. Their posts are not public, therefore not listed in Google, unlike the rest of the forum threads on the site.
Mods have nothing to do with creating new forums. It is the sole responsibility of the site owner, RoboOp, to decide on, and create, new sections of the forum.
New forum area creations are rare because Robo wishes to keep there from being an excess of options that will bloat the site and make it harder to navigate. There also has to be a high a perceived high enough demand. The large number of Indian and Philippinos on the site suggested this demand, but neither group seems to actively participate in their specified forums. That wasn't predicted, no doubt.