Assembly Design > Using Assembly > Placing Components > About Editing Placement References
  
About Editing Placement References
When you place a component or edit a placement definition, you can use the shortcut menu in the graphics window to edit placement references without opening the Placement tab. Right-click the constraint name in the graphics window and choose Edit References. You can change placement references, or change the constraint type.
To change the constraint type, you must first delete at least one reference. For predefined connection sets, you can edit the axis alignment, translation, or rotation references.
The constraint tag background and font color provide information. The tag of an active constraint has a dark pink background color.
 
* When you edit the properties of a constraint from the edit reference shortcut it does not interfere with placement auto progression. You can edit a constraint in the Placement tab, but it will stop auto progression. To continue defining placement constraints you must click New Constraint in the Placement tab or use the right mouse button shortcut menu.