Get Admin

[mrDustin0]

Hey guys,

if I join my server, I am a spectetor!

How can i get admin / any right to build smth.?

I did not found it in the permissions thread.

(Or how do I acces to the users.json and groups.json (if it is there possible to give someone admin)?)
(Or how can I change the defaultgroup?)

I run a headless dedicated server, so a way about the terminal would be perfect, haha.

Regards Dustin!