Need help to restrict name GM and Admin to players

[Petey Pablo]

Need help to restrict name GM and Admin to players. Thanks

     // Character name configuration
        name: {
            // Name used for unknown characters
            unknown_char_name: "Unknown"


            // Allow or not identical name for characters but with a different case (upper/lower):
            // example: Test-test-TEST-TesT; Value: 0 not allowed (default), 1 allowed
            name_ignoring_case: false


            // Manage possible letters/symbol in the name of charater. Control character (0x00-0x1f) are never accepted. Possible values are:
            // NOTE: Applies to character, party and guild names.
            // 0: no restriction (default)
            // 1: only letters/symbols in 'name_letters' option.
            // 2: Letters/symbols in 'name_letters' option are forbidden. All others are possibles.
            name_option: 1


            // Set the letters/symbols that you want use with the 'char_name_option' option.
            // Note: Don't add spaces unless you mean to add 'space' to the list.
            name_letters: "abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
        }