Thanks for the feedback -- much appreciated.
Based on what you sent, I now offer a theory as to why I do not see ZOOM. It may be "greyed out" by the warning I get when I start VP 4.31 about not having hardware to handle graphic for 3D. When I open the Video Effects tab on the main screen, I see a list of effects under "Motion ..." including Crop, Rotate, Scale, Motion, Zoom, Shake, that are "greyed out" and annotated as "(unavailable)". The only ones I see active are Position, Mirror, Motion Blur, and Split Screen. These are the ones that appear when I click on the effects button in the timeline image.
Is it possible that my "old" hardware has caused me to lose these effects?