I use the grouping tool. I select a body part, create a new group, select the polygons I want in that body part, and assign it to a new material name. I then do the same with another body part and assign it that same material name. And repeat until all affected body parts have this new material name assigned.

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W11,Intel i9-14900KF @ 3.20GHz, 64.0 GB RAM, 64-bit, GeForce GTX 4070 Ti SUPER, 16GB. 

Old lady hobbyist.

All visual art or fiction is "playing with dolls."