New User with admin privileges + su (wheel) member (Login with 2FA/TOTP)

[PhoenixRider]

Hello Guys,

i want to deactivate the root-user (for security purposes) in Web-GUI und add a new user with admin privileges. Thats no problem, but via SSH-connection i can't access the default shell-login und can't get su-privileges.

Is it possible, to add the new user to wheel/su-users?