[emokidx]

I am assuming that you have basic coding knowledge.

pawn Код:

CMD:requestban(playerid, params[])
{
    if(AdminLevel[playerid] < 1) return SendClientMessage(playerid, color, "YOU NO ADMIN!");
    if(sscanf(params, "us[128]", id, reason)) return SendClientMessage(playerid, color, "/requestban [id] [reason]"); //Define these variables (id, reason)

    for(new a; a<MAX_PLAYERS; a++)
    {
     if(AdminLevel[playerid] >= 4)
     {
            format(str, sizeof(str), "%d requested ban on %d for %s", playerid, id, reason); //Use GetPlayerName for names. 
            SendClientMessage(a, color, str); //define str somewhere
     } 
    }
    return 1;
}

This is just a layout of what your command will look like.