I have groups like Admin, Mod, Player, Spectator, Jail ect, and i want Mod to be able to grant levels below it but not above and at the same level as Mod. Is this possible with LuckPerms?

How did you solve this? I use luckperms.user.parent.set.[name of my group, in my case is helper] but it doesn't work

I use luckperms.user.parent.set.helper

How did you solve this? I use luckperms.user.parent.set.[name of my group, in my case is helper] but it doesn't work

I use luckperms.user.parent.set.helper

There is the option to enable argument-based command permissions to restrict commands to certain patterns only.
https://github.com/lucko/LuckPerms/wiki/Argument-based-command-permissions

How did you solve this? I use luckperms.user.parent.set.[name of my group, in my case is helper] but it doesn't work
I use luckperms.user.parent.set.helper

There is the option to enable argument-based command permissions to restrict commands to certain patterns only.
https://github.com/lucko/LuckPerms/wiki/Argument-based-command-permissions

I try it, it's says "you don't have permission to use any sub commands", what's the problem?