Within the theme editor, there is the option to add Product Pages Content Blocks that will add common tabs like return or contact information to ALL products, but your products may need to display unique information via tabs.
Recommended reading
In this section...
Adding unique tabs
This may seem tricky, but is very easy via the rich text editor. Within your admin, a typical description make look like this:
Your customers will see this:
To add a Video, Image & Text tab, within the admin editor highlight the word & choose 'Heading 6' in the 'Formatting' dropdown option:
After selecting 'Heading 6', within the admin your new 'tab' will look like this:
After highlighting & selecting 'Heading 6' for each new tab you need, you customers will see this:
Credits
Thank you to Timur Tairli for sharing his unique code online & permitting use within this theme.