There's an initative tracker built in to it. You can create encounters before hand, or load monsters ad-hoc, and load players on to it. It automatically rolls initiative, but you can edit all the values on the tracker. Its basically just a simple init tracker, its not like a full VTT or anything.
If you have pages with the same name as the monsters, it will scrape links from your oneNote pages and link them up in the init tracker, and you can use the "navigate" button to open that monster's page.