Multiple Diffuse switch

Hey guys
I can not find way to add multiple diff texture into one main material and to change in the instance m. whith checker
Total 50 diff textures!
This would saved a lot of time and space! Please


I think you need create base material with Texture Sample Parameter 2D node. You create Material Instance and assign a new texture. Your project contain one Base material and many Material Instance with different textures. This is optimal and standard practice.