Once you have done the initial setup you you can grant users mod privileges.
Navigate to http://[yourNodeURL]/mod/keygen (e.g. http://oniichanylo2tsi4.onion/mod/keygen) and save both your secret an public key.
E.g.
If you want to be uniquely identified when posting on NNTPChan you can 'authenticate' yourself by putting in the name field name#yourprivatekey
E.g.
user#0902e04b64bcb8172fb1ced455f348c3462fe64ced193247e5df05dc79fe93ee
To add a new moderator you need to ask for his public key. Then following Managing your NNTPChan node with the CLI:
Add a public key to moderation trust
Where publickey is the public key to be added.
./srndv2 tool mod add publickey
Remove a public key from moderation trust
Where publickey is the public key to be removed.
./srndv2 tool mod del publickey