I applied for a scholarship waiting for its result. I also found a part-time teaching job. I am a bit confused about this process because all the other Ph.D. programs I applied for required me to submit an application that could either be rejected or accepted. I will need a document certifying my acceptance into a university if I get its scholarship. But I can't figure out whether having a supervisor by itself guarantees admission and the application I will submit is just a bureaucratic process, or I might be rejected for some reason. I need to know this since I have to either sign a contract for my part-time job or accept offers from other universities.