For additional information and detailed pictures of how to mount, please visit my model page on Makerworld Multiboard AMS Shelf and Build Plate Holder. Help support me by liking and downloading.
Plate Holder The plate holder is designed to fit on the inside of the AMS Shelf Brackets, by attaching to the Multiboard brackets. The plate holder holds up to four plates, in a staggard fashion so you can easily see and grab the plate you want. You can add multiple pairs of plate holders and stack them on the shelf bracket and hold as many plates as you want (within reason).
For multiple plate holders, stagger the holders 2 Multiboard units apart. You can swap the left/right holders to opposite sides of the AMS Shelf Brackets if you'd rather have the top plate sticking out the furthest or vice-versa.
I used Multiboard double-side snaps (part A) on the plate holder so you can use the Part B on the outside of the brackets for a nice, clean look. This also means you can use these snaps to attach other things using the same mounting point on the outside using push-fit pegs or medium threaded bolts.
Warning: the snaps pieces on the Plate Holder are delicate! I increased the tolerances on the snap fittings to make it easier to push in, but I recommend laying the bracket on a flat surface and pushing the Plate Holder straight into the Multiboard tile, or else risk breaking the snap attachment on the plateholder.