Track motion
 

I'm wanting move an event in 3D space. I know it can be done using Track Motion and '3D Source Alpha' moving the event on the xyz axis'.

My question is: Can this same motion be confined to one event among many on a track (as Pan and Crop can be), as opposed to having a dedicated track for a single event? If so how?

Re: Track motion
 

You can use 3D Source Alpha as Parent composition mode and move all tracks with Parent track motion.
(Page 386 in Vegas Pro 12 manual PDF)

Re: Track motion
 

You can do it using keyframes but it means more work for you.