[jamesb93]

I use something like this:

pawn Код:

public OnPlayerRequestSpawn(playerid)
{
    if(Classid[playerid] == 0 || Classid[playerid] == 1 || Classid[playerid] == 2 || Classid[playerid] == 3 || Classid[playerid] == 4)
    {
      if(TeamMafia > TeamLSPD && MafiaTeam[playerid] == 0)
      {
            SendClientMessage(playerid,COLOR_RED, "[SYSTEM] In order to balance the teams, You Must Choose The LSPD");
            return 0;
        }
    return 1;
    }
    if(Classid[playerid] == 5 || Classid[playerid] == 6 || Classid[playerid] == 7 || Classid[playerid] == 8 || Classid[playerid] == 9 || Classid[playerid] == 10)
    {
        if(TeamLSPD > TeamMafia && LSPDTeam[playerid] == 0)
        {
            SendClientMessage(playerid,COLOR_RED, "[SYSTEM] In order to balance the teams, You Must Choose The Mafia");
            return 0;
        }
    return 1;
    }

Not 100% accurate but I have a timer to reset it