To Edit Placement References
1. In an open assembly, select the component to edit in the Model Tree or graphics window, right-click, and choose from the shortcut menu.
2. Double-click a constraint tag, or right-click the active constraint tag and choose Edit References in the graphics window. The floating dashboard opens.
3. To change references, select a new reference on the assembly, the component, or both. The references automatically update.
4. To change the constraint type, select a reference, right-click, and choose Remove from the shortcut menu. Then select a different constraint from the list and select references as required.
5. Click or press ESC to close the floating dashboard.
6. Click to accept the new placement references.