1. I want to make a solo server. Is there any plugin that prevents players to play in a group? For example, if a 2 or more players stay in one area/distance without fighting each other for a cetain ammount of time it displays a message and/or starts damage this players.
     
  2. I don't know about if there already exists one, however one way to prevent players from bunking up with each other is to limit the cupboard authorization to one.
     
  3. I always had an idea of checking how many players are near each other (checking distances with Vis.Entities) but that could spit out a shit ton of false positives
     
  4. Try it, if statements for checking if they are a BasePlayer would work. Along other things.
     
  5. i found a plugin with this function: TeamGuard, its not free but ill try it