Thank you. Some it is helpful. But whether it's Apple or Microsift, my going from 2013 MBP with MS Word 365, with the older Magic Keyboard, to M1 with the new Magic keyboard and the same WOrd 365 was anything but smooth. For example, I was not able to make F5 useful even after I turned it off in System Preferences. On my MBP, it used to open the GoTo window.
In the end, I have managed to find the commands I needed and put them above the ribbon by doing the following:
In Ms Word, go to Preferences->Ribbon & Toolbar->Quick Access Toolbar. Then, in the left pain, I chose "All Commands" and selected those I needed to move them one boy one to the right pane "Customize Quick Access Toolbar". This is exactly what I need. My most frequent commands are now all arrayed above the ribbon: footnote, goto bookmarks, goto TOC, top of document, end of document, previous edit. I am sure I'll be populating it further as need arises.
Hope this helps another book-writing lost soul like myself.
24-inch M1 (2021), 16 GB Memory, Magic Keyboard, Magic Mouse