(UE5) How do I choose a texture from a texture group/multiple textures in one file?

Development Asset Creation
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So I have a character from Mixamo, had to fix some skin issues, and I figured that out somehow, but I wanna know how to pick textures from this (I don’t know what it’s called) pack/map/group…

This is the current look on her face:
https://prnt.sc/1z25393

Texture group that came with it:
https://prnt.sc/1z25d4p

Here’s what the Material Graph looks like for the mouth:
https://prnt.sc/1z25lcf

I tried rotating it and whatnot but I can’t seem to figure out the right way to do this.
Any help is appreciated, thanks!