Basic Crafting System (Minecraft Style)

Hello there everyone. I am currently working on a survival project and i was wondering if anyone has any idea on how to make a basic crafting system like minecraft. Nothing spectacular, just basic enough so you can put two or more items together in a uniform grid panel or something in a UMG widget to created another item. If you have any ideas and or know how. I am willing to pay to get it working. Thanks for your time!

I imagine you would have an array for each slot on your crafting UMG. Using that, you would iterate through those slots, and check against database of some sort. Is this networked or just single player implementation?

networked. i currently have an array set up for the inventory im using i just cant think of how to make the two work together