I have always had this question since I started to learn German that when to use auf and when to use an . As an example I can name the word "Antrag". When to use preposition "an" and when to use preposition "auf". Can they be used interchangeably? If not, what's the difference?
For example:
Einen Antrag an den Betriebsrat stellen.
or
Einen Antrag auf den Betriebsrat stellen.
Thanks in advance.