[BigGroter]

Untested and probably inefficient, but hey.
Add "new boolnDuty[MAX_PLAYERS];" at the top of your script and when a player goes on duty, use onDuty[playerid] = true;

pawn Код:

CMD:admins(playerid, params[])
{
    new pName[MAX_PLAYER_NAME], message[128];
    SCM(playerid, -1, "Admins online:");
    foreach(new i : Player) // assuming you use foreach.
    {
        if(IsPlayerAdmin(i))
        {
            GetPlayerName(i, pName, sizeof(pName));
            if(onDuty[i] == true) // or whatever variable you use.
            {
                format(message, sizeof(message), "%s (ID %d)", pName, i);
                SendClientMessage(playerid, COLOR_GREEN, message);
            }
            else
            {
                format(message, sizeof(message), "%s (ID %d)", pName, i);
                SendClientMessage(playerid, -1, message);
            }
            
        }
    }
    return 1;
}