Gloryhole

I went to check out the gloryhole at Bedworthpark PnP Wow I got a stiff one by just looking at the fun hole. It made me wonder how does it work and how do people arrange meetings for places like this. It was my first time at one and im sure that that little gaaitjie can give you lots of pleasure 😁 Is these holes just for mm or mf as well as its situated in the male bathroom?