If you don't mind foregoing a transiton, you can do this with keyframes. Use the PIP designer on each clip and start each one off the screen. Then use keyframes to move them to meet at the middle. I can produce a short tutorial for you if that would be helpful.
Here is one way to do it using masks and keyframes.
--Jim
This message was edited 1 time. Last update was at Mar 03. 2019 16:43