can you use markers to drive the animation of both an actor and another object, such as a baseball bat or a golf club?  I have data that has markers for both actor and object.  I know you can add objects via character extensions, but I haven’t found any way to transfer the object’s markers to the character extension.  I have experimented with bringing the object in as a prop with the character, but so far have been unsuccessful.  Anyone have any ideas?

hi,
one easy way to drive a props is to use a rigid body constraint.
you just put into the constraint object your props, and in the source objects your markers.

Check out the video tutorials for motionbuilder in Area. Just go to tutorials and search MotionBuilder for props. There is a great one there that will help you.