Hi David - The community platform doesn't provide the mechanism to add sub-navigation or basic tabs within a document. I'd advise creating a new document for ARM Accredited Engineer Program News (as you did for Upcoming events for the ARM Accredited Engineer program) - then you can cross-link the two documents within the text field. Please let me know if you need any further help or clarification.
If what you want is like in How to Join the ARM Connected Community Partner Program (For Company Space):
- add proper Heading style to your section titles. (See Style Guide - Content Creation: Font, Link, Heading, Image and Table)
- at the top, add a Table of Contents.
The TOC link is in the rich text editor bar, after clicking on >> on the right of the smiley icon.