Orient constraints let you match direction faced by one object to one or more other objects. This constraint is useful for making several objects orient simultaneously. For more information about orient constraints, see Orient constraints.
When creating orient constraints, you can first set creation options and then create an orient constraint, or you can immediately create a constraint with the current creation options.
To create an orient constraint
To add an orient constraint to an animation layer
Turn on Maintain Offset when adding constraints to animation layers so that your constrained objects do not move unexpectedly.
The constraint animation is now contained in its assigned animation layer, and it contributes to the result animation in your scene.