[Medal Of Honor team]

Try this

pawn Код:

new bool:NewbieChat;

pawn Код:

public OnGameModeInit()
{
    NewbieChat = true;
    return 1;
}

Toggle for /n [chat]

pawn Код:

if(!strcmp(cmdtext, "/togglenc", true, 9))
{
    if(NewbieChat == true)
    {
        SendClientMessage(playerid, COLOR, "Newbie chat disabled");
        NewbieChat = false;
    }
    else
    {
        SendClientMessage(playerid, COLOR, "Newbie chat enabled");
        NewbieChat = true;
    }
    return 1;
}

chat cmd

pawn Код:

if(!strcmp(cmdtext,"/n",true,2))
{
  if(PlayerInfo[playerid][Newbie] ==0) return SendClientMessage(playerid,0xffffffaa,"You are not a newbie"); //checking if a player is not a noob, change it to your variable if any
  if(NewbieChat == false) return SendClientMessaeg(playerid, COLOR, "Newbie chat is disabled!");
  new name[MAX_PLAYER_NAME];
  new string[256];
  GetPlayerName(playerid,name,sizeof(name));

  for(new i=0; i< MAX_PLAYERS;i++)
  {
    if(PlayerInfo[i][Newbie] ==1)
    {
      format(string,sizeof(string),"[NewbieChat] %s: %s",name,cmdtext[3]);
      SendClientMessage(i,0xffffffaa,string);
    }
  }
  return 1;
}

Not tested