How to become admin on your Hytale server
Admins on a Hytale server have access to important commands that let them manage players, control the world, and keep the server running smoothly. Because admin access gives full control over the server, it should only be given to players you fully trust.
TIP
Commands entered in the server console do not need a slash (/) at the beginning.
How to add Admin
Step 1) Go to the console > click on your server > and navigate to console.

Step 2) Run command op add "Username" and press ENTER

How to remove Admin
If you want to remove OP (Admin) permissions for specific user you can make it with command op remove "Username"

