Actions (or activities) that users have performed are shown in the user activities page. This page shows a table of the users last 1,000 activities including what the action was, when it was performed and on what object. If the action relates to an object such as a Project, Draft or Edit Check then clicking on the description of the action will navigate to that object.
The page also shows a month-by-month summary of the number of activities that occurred on any given date. Clicking on a date in the summary filters the activity table to activities that occurred on that date.