Onion skin & animated layers

Hello. I’ve gotten my copy of Toon Boom Studio 7.1 several months ago and I’ve been making small animations with it.

I want to make more detailed animations with smooth, flowing movements, but when I tried to extend the onion skin, I couldn’t.

How can I extend the onion skin to show more than 3 frames, both forward and backward? Or was Toon Boom Studio designed to only show 3 frames at a time.

Also, how can I motion tween animated layers?

As far as I know, Studio’s “Onion Skin” can show only a maximum of 3 drawings…
Check out “Animate”, the “Onion Skin” feature is far more flexible…

Check out “JK’s” excellent “Bouncing Ball” Tutorial, using motion-tween-keyframes: