Lot trait help

Hello everyone, i try to make a custom lot trait "Hotel" that spawns sims with a custom personal sim trait "Guest" . So here is my question, how to make a lot trait that spawns a sims with custom trait ? I started watching tutorials, i understand how to make a sim trait, but dont understand how to make lot ttait that spawns sims with my own pre made trait... And one more question , is it possible to make a trait works on rental lot ? Am i got to use a zone modifier ? Thanx in advance...