[John Erdman]

Do you mean Auto-Orient?

Try selecting the 3D layer (or 3D null it’s parented to), go to Layer < Transform < Auto-Orient, and select “Orient Towards Camera”.

[John Erdman]

I solved this one with the help of Dan Ebberts’ Motion script page–

Parenting the variable, (in this case, the “-450” in line one), to a slider with the Hold Frame expression from this page https://motionscript.com/articles/speed-control.html
made it work perfectly.

Be sure make the sure the variables are consistent. I changed “rate” to “spd” in this case.

Props to Dan Ebberts