Solved What the default oxide group name?

There's some plugins that requires permissions, and I want all players to have the permissions
I know how to use
grant user "xxx" "permission"
and I know
grant group "xxx" "permission"
but is there a default group for all normal players with auth level 0? Or do I have to add all players one by one to a group I created?
And is there a default group for admins?

 

oh neat, thx