Is there a way to select a face from a group photo for face fusion?

We can already select an image from a list to fuse with the user’s face. I see that the options in the Fuse texture and material are limited, or I haven’t found the right tool yet.
It’d be cool if there is a way to select a face from a crowded image to fuse with the user’s face.
Please let me know if there’s already a way, if not this could be an awesome feature.

Thanks in advance.