How do I convert a .obj file to a .arobject for use in ARFoundation Object Tracking?

I am trying to use the Object Tracking functionality from ARFoundation and I would like to track objects other than the two sample objects provided in the ARFoundation Samples library.

How can I convert previously scanned objects in other formats such as .obj, .fbx point clouds etc into the .arobject format required by ARFoundation?

There is no way to convert a regular model into arobject file.
arobject files can be only built with a scanning app from apple.

Many thanks,
Managed to download and run it ok.
It would be better if it was possible to convert objects in other formats that have been scanned in using photogrammetry in arobjects though as the app doesn’t seem that reliable.