v7.7.0 and later
The Latest Changes menu option opens a page showing recent changes and who made them, helping you keep track of what’s happening in Modeller. The page shows changes by time/date, user, and comments, which can then be expanded for details. There is also a Latest Changes card on the Modeller landing page. You can access the open link in the top right-hand corner, which will take you directly to the full Latest Changes page.

You can also find this page at:
Modeller > Solution Modeller > Latest Changes

Selecting an entry opens the history blade which shows details of the change. You can also open the View Advanced Details from the Action menu. The advanced details show the changes recorded by the audit system in JSON format. Use the Show Changes/Show Contents button to see the differences.
