how add new key in controll settings

[hekut146 10]

i add to config this:

class UserActionGroups {
    class HGN {
        name = "HGN Controls";
        group[] = {
            "hgn_key_1",
            "hgn_key_2",
            "hgn_key_3"
        };
    };
};
class CfgDefaultKeysMapping {
    hgn_key_1[] = {};
    hgn_key_2[] = {};
    hgn_key_3[] = {};
};

but where i need add display name? (i see only category key binds

)