To see a graph of usage over time, navigate to the "Weekly Usage" card in the Admin Dashboard > Activity tab.
In the weekly usage graph, you can see how people are performing a set of actions over time.
You can select what stat you want to view.
The graph will update.
The most recent data point will show the count of actions since the last Monday. So if you check this stat on a Monday or Tuesday, you may not see a very high number.