Laravel. How to properly chain condition chain in ORM?

Question

Laravel

there are several conditions like

->where('status',1)
 ->whereDate('start_time', "<=", Carbon::now()->addWeeks($week)->format('Y-m-d'))

Now there is enough knowledge

Program::orderBy('start_time', 'ASC')
            ->where('status',1)
            ->whereDate('start_time', "<=", Carbon::now()->addWeeks($week)->format('Y-m-d'))
            ->with('league')
            ->get();

How to put conditions into separate methods?
To get something like this:

publick function activ(){
    $this->where('status',1)
}
publick function addWeeks($week = 1){
    $this->whereDate('start_time', "<=", Carbon::now()->addWeeks($week)->format('Y-m-d'))
}
Program::orderBy('start_time', 'ASC')
            ->activ()
            ->addWeeks()
            ->with('league')
            ->get();

Answer 1

https://laravel.com/docs/5.6/eloquent#local-scopes