Go to Sections > Tab description
Tabs style: Only For Product Tab Description
Tab aligns: Right, center, left
Use tabs vertical
Choose type of contents which you want to show by: Click to Add content
Description + Reviews + Additional Information tab are automatically created. You just can remove them in Customize view.
If you want to edit their content. Go to Product Setting
Product description design: There are 3 types.
Product tab description
Product tab accordions full with
Product tab sidebar