Minehut should add "PerWorldPlugins" Plugin, it would be much easier to change perms etc.
If you dont know what "PerWorldPlugins" Plugin is then its basicaly, lets take a example you have 2 worlds "world1" and "world2"
And you have plugin called "ASkyBlock" or whatever so you can change config. Main command in "ASkyBlock" is /is so basicaly
they can't do /is in "world1" if you have put "ASkyBlock" plugin into "world2". Sorry if you didnt understand because my main language isnt english
You can look up "PerWorldPlguins"