Wow, that comment got taken down fast (someone else's inflammatory comment).
Anyways, the item modding process/benches seem pretty intuitive and fluid to me, you just gotta make sure you have the material and perk requirements. I'm guessing this is about the settlement benches, yes? I had a major issue there too. It's not at all intuitive. I was able to pull up the workshop menu, but then the game doesn't prompt you at all on how to select categories or show you want buttons do like in every other interface ( "Enter) Confirm" "Tab) Cancel" ) . I had to press almost every single button on my keyboard to figure it out. On PC, it was the activate/interact button "E".