[[ABK]Antonio]

I would use a template like this

pawn Код:

enum { None, Delivery, SomeOtherJob, Another};
enum pInfo {Job}; //can add other things in here like kills, deaths, level, etc

new Info[MAX_PLAYERS][pInfo];


public OnPlayerConnect(playerid)
{
    Info[playerid][Job] = None; //reset the playerid's job to 0 (needs to be done when working with arrays)
    return 1;
}

CMD:join(playerid, params[])
{
    if(Info[playerid][Job] != None) return SendClientMessage(playerid, 0xCC0000AA, "You already have a job!");
    
    if(IsPlayerInRangeOfPoint(playerid, Float:range, Float:X, Float:Y, Float:Z)) //these would be for delivery job join location
    {
        Info[playerid][Job] = Delivery; //set their job to delivery
        SendClientMessage(playerid, 0x00CCCCAA, "You're now a delivery man!");
        //If you had a saving system you would save this either when they join or when they log out
    }
    else if(IsPlayerInRangeOfPoint(playerid, Float:range, Float:X, Float:Y, Float:Z)) //some other job
    {
        Info[playerid][Job] = SomeOtherJob;
        SendClientMessage(playerid, 0x00CCCCAA, "You're now something!");
    }
    //and the same as above for the rest
    return 1;
}

CMD:quitjob(playerid, params[])
{
    if(Info[playerid][Job] == None) return SendClientMessage(playerid, 0xCC0000AA, "You don't have a job!");

    Info[playerid][Job] = None;
    SendClientMessage(playerid, 0x00CCCCAA, "You've quit your job!");
    //like above if you have a saving system you would save this either when they join or when they log out
}

It depends on how you want to actually start the job. Entering a truck? With checkpoints for destinations? If so, I would go to the tutorial section and look for tutorials on things like exclusive vehicles, checkpoints and what not. You could also go to the wiki and look around there.