if only there was a search function on the forums that could allow us to find such important info…
source: How to build Custom Tracks
Go to my documents/Automation/Tracks and put (or unzip) the track folder there.
If you do not find Tracks folder, create one with that name. So, for the green hell you should have something like documents/Automation/Tracks/Green Hell and inside at least two files, a png and a .lua file.
Run automation, and in the lap test mode, you will find a drop down menu where you can select custom tracks that have been previously downloaded and placed in the previous described folder (see above).
If you’re already running automation when you place the custom track in the folder, close and re-open automation so the new custom track appears in the list.