[Daniel-92]

pawn Code:

public OnPlayerRequestClass(playerid, classid)
{
    SetPlayerTeamFromClass(playerid, classid);
}

SetPlayerTeamFromClass(playerid, classid) 
{
    if(classid == 0) {
        gTeam[playerid] = TEAM_WORKERS;
        SetPlayerTeam(playerid,TEAM_WORKERS);//You can delete this line if you want to allow team killing...
        GameTextForPlayer(playerid,"~g~Workers",10,0);
    }
    else if(classid == 1) {
        gTeam[playerid] = TEAM_AGENTS;
        SetPlayerTeam(playerid,TEAM_AGENTS);//Same for this!
        GameTextForPlayer(playerid,"~r~Agents",10,0);
    }
    return 1;
}