Stack controls
Inspect the active stack relationship and change its available placement and offset settings.
The current Stack controls describe the relationship of the selected object to its target. Select the linked object before editing them. A missing control may mean the object has no relationship or that the current mode does not support that setting.
Select a stacked object
Select the object participating in a live stack relationship. Use the Stack controls or the relationship's action bar to inspect the current mode. The shared Inspector can show Surface Offset where that value applies.
Change placement where available
In Stack options, choose On a face or Where it is if the relationship offers a placement choice. Where offered, Keep upright and Align to face determine its orientation on the target. Read the current options rather than expecting the old Composition section.
Set Surface Offset
Use Surface Offset to move the linked object relative to its supporting surface. Enter a length in project units or with an explicit unit. The on-canvas controls and the Inspector edit the same relationship.
Separate or merge
Use Separate to remove a relationship. Merge into one object is available only for supported modes and solid objects; read its confirmation before proceeding. Undo reverses a committed change.