If that's true your teacher is telling you, then this will must be true also:
If you were working on a self-employed basis for installing audio-equipment in vehicles, and there's a client with a Toyota, would you need the approval of Toyota to do it?
Or do you have to pay a fee to Toyota for doing this?
NOOOO.
If you wanted to put a label on the installation which says "approved by Toyota", then you would probably have to pay a fee for using their logo.
This example is as stupid as the thing your teacher tells you.
If you were working on a self-employed basis for installing audio-equipment in vehicles, and there's a client with a Toyota, would you need the approval of Toyota to do it?
Or do you have to pay a fee to Toyota for doing this?
NOOOO.
If you wanted to put a label on the installation which says "approved by Toyota", then you would probably have to pay a fee for using their logo.
This example is as stupid as the thing your teacher tells you.