how do I auto lipsync

How do I auto lip sync? ??? ??? ??? ???

Well, either draw your mouth-shapes directly in Studio and name them
A - B - C - D - E - F - G - X , or import them (saved from another character)
from the Library into your project…

If you like, here is a short video demonstration:
(no sound - apart from the sound-file - it’s all fairly simple and straightforward…

Otherwise, check out Chapter 11 “Sound and Lip-sync” you’ll find at page 330
in the Toon Boom Studio 5 User Guide PDF…