Adding/Removing a Constraint
What is described on this page about Object Constraints can be also be applied on Bone Constraints.
Tab
Reference
Mode:
Object Mode
Menu:
Properties ‣ Constraint tab
To add a constraint click on the Add Object Constraint menu in the Constraints tab.
To remove a constraint click on the “X” button in the header.
Menu
Add Constraint (with Targets)
Reference
Mode:
Object Mode and Pose Mode
Menu:
Object ‣ Constraint ‣ Add Constraint (with Targets)
Adds a constraint to the active object. The type of constraint must be chosen from a pop-up menu, though it can be changed later from the Add Constraint (with Targets) Adjust Last Operation panel. If there is an other object selected besides the active one, that object will be the constraint target (if the chosen constraint accepts targets).
When using a bone from another armature as the target for a constraint, the tool will look inside the non-active armature and use its active bone, provided that armature is in Pose Mode.
Copy Constraints to Selected Objects
Reference
Mode:
Object Mode and Pose Mode
Menu:
Object ‣ Constraint ‣ Copy Constraints to Selected Objects
Copies the active object Constraints to the rest of the selected objects.
Clear Object Constraints
Reference
Mode:
Object Mode and Pose Mode
Panel:
Object ‣ Constraint ‣ Clear Object Constraints
Removes all Constraints of the selected object(s).
Track
Reference
Mode:
Object Mode
Panel:
Object ‣ Track
These tools add a tracking constraint to the selected objects; the target object of the constraint will be the active object, which won’t have a constraint added.
Clear Track
Removes all Damped Track, Track To and Lock Track Constraints from the selected objects.
Clear and Keep Transformation (Clear Track)
Removes all Track Constraint from the selected objects, while keeping the final transform caused by them.