Step 1:
Hovering on the Left Panel will bring you to the Pipeline Activity page.
Here you can view all activity by user and custom date range. This report gives you a list of activities undertaken by the user in the selected time period and the lead associated with it. These activities are any action that has been taken by the salesperson for leads including, updates, setting reminders, moving a lead through the pipeline etc.
Step 2:
Click on Pipeline Activity as seen above.
Step 3:
You can then select the user and custom date ranges to get an in-depth view of the performance and type of activity for each lead as seen below.