Leaf Material when using Path tracer

How do I adjust the foliage materials that can be used in Path Tracer?

I followed the method in this video https://www.youtube.com/watch?v=09weaMhxsFw to adjust the foliage material, but the material adjusted by this method cannot be used in Path Tracer.

Then I tried using Twinmotion’s built-in and Megascans foliage models, and their foliage materials were translucent in Path Tracer, these foliage models have hidden materials, so there’s no way to know what materials they’re using.

How could I do the same on an externally imported model? I can’t find any relevant information online.