You can view the change history for an agenda or minutes.
First, you need to be in the agenda/minutes edit view. To do so, click "Meetings" > "All meetings" in the left menu. Then, click "Edit agenda" or "Edit minutes," depending on whether it is an agenda or minutes.
In the edit view for either the minutes or the agenda, click the icon with three dots (···) and select the option "Change history".
From this view, you can see changes related to the agenda/minutes, such as changes to the minutes text, presenters, decisions/to-do tasks, etc.