i'm using "OneNote for Windows 10" which seems to have lost a lot of the power features. It looks like both Dock to Desktop and Linked Notes have gone.
Ah yes. Use OneNote 2016 (or OneNote 2010), which is free to download and use, not the Windows App.
there are so many power features that were removed after OneNote 2016 - it makes using Onenote obsolete nowadays - hate to start using another note taking method now