Once you have chosen to Add Cabinet/Panel in your existing room.

Corner Cabinet Shelving is found in Cut To Size -> Shelving.

Enter the sizes that the shelf needs to be.

1. Height should be the thickness of the material.
2. Width is the width of the left back.
3. Depth is the depth of the left side.
4. Width 2 is the width of the right back.
5. Depth 2 is the depth of the right side.

1. Change quantity (Qty) if there are multiple shelves to order.
2. Close dialog box to complete entry.

Once you have completed this item and entered any other items that may require ordering, to the room, then follow the process to order a room.