Apply an item button to more than just one slot

[moonEEVEEXwX]

What feature do you want to see added?

Like we write the glass pane,we write it form this: 2: display-name: " " material: GLASS_PANE 4: display-name: " " material: GLASS_PANE 5: display-name: " " material: GLASS_PANE

Into this: [2,4,5]: display-name: " " material: GLASS_PANE

Are there any alternatives?

The Form can be changed like this too item_name: display-name: " " spot:[2,4,5] materialGLASS_PANE