Assuming that your model is in Set 1, all you need to do is animate the “Set 1 Y Rotation” property. Twirl down Sets then twirl down Set 1 and you’ll see it there. You may need to reset your model or reimport it to make sure that all of the settings start at their defaults (in case you’ve been playing around).
best,
JD
John Dickinson
Motionworks
https://www.motionworks.com.au