Reduce number of textures

Is there a parameter to set to reduce the number of texture files

What do you mean by this?

i mean the png fexture files there are about 16 of them other software you can define 1 or 2

The textures for the 3D model (.obj)?


Can you help me understand what the need or benefit of this would be?

What problems does this solve?

Why is it helpful/good?