I need some help with an augmented reality site

Hello, I need some help with an augmented reality site. I want to make 10 custom markers (.patt files) each one should trigger a specific augmented reality image. I can get it to work with the Hiro marker, yet I cannot make it work with a custom marker. This is for an art show that is coming up fast. I have looked online and YouTube but can’t seem to find anyone that knows how to make a custom marker