[Kush]

Sounds simple enough.

pawn Код:

CMD:requesthelp(playerid, params[])
{
    new Sender[MAX_PLAYER_NAME];
    new Str[128];
    GetPlayerName(playerid, Sender, sizeof(Sender));
    if(sscanf(params, "s[128]", params)) return SendClientMessage(playerid, COLOR_GREY, "USAGE: /requesthelp [reason]");
    format(Str, sizeof(Str), "[Help Needed] %s: %s", Sender, params);
    SendClientMessageToAll(COLOR_LIGHTBLUE, Str);
    return 1;
}

This is a simple example, which would Send the message to all players if someone needs help. What ever variables you have included into your gamemode regarding Helpers/Admins, you would need to make minor edits to the command posted.