This question also has an answer here (in German):
Erwiderung auf eine Entschuldigung?
To make it more clear: I am not asking how I should apologize, but how to respond to an apology.
I have heard something similar to the following whenever I had to tell "Sorry":
- Kein Problem.
- Macht es. (Not sure if they really meant that)
Are there anything more that I could tell in response to an apology?
Macht es means you can do it?