Placeable Groups are groups assigned to items of a block type. When the block is placed, the group assigned to the block-item is spawned where the block is placed.
Create a Placeable Group
While holding an block item (Stone, Oak Planks, etc.), run /deu place set <group-tag>
Now when that block is placed, a barrier will be placed and the group with the set tag will be spawned in its place
Placeable groups can be broken by clicking the barrier block created at its location
Placeable Group Properties
Run /deu place ... to view commands that can change properties such as the permission to place a group (/deu place setpermission) or to respect the player's facing direction (/deu place toggleplayerfacing)
Unset a Placeable Group
Run /deu place unset to remove a placeable group from an item
