How to modify these customizations of  FbxTextureImport Data?

As shown in the following figure.Why is there no Base Roughness Texture Property setting? How do I do for this part?

This question has perplexed me for a long time. I look forward to your suggestion very much.Thank you.

https://forums.unrealengine.com/filedata/fetch?filedataid=179731&type=full