DocBoss has created a report to easily track and view document controllers KPI's. In the report you will find information which you can filter by date, User, Project ID, Sales Order/Quote number, Project, incoming Assignments (from Customer, Sub-Supplier, and 3rd party), as well as Uploads via Outstanding Actions.
Simply navigate to: Settings>Reports>Assignment Activity (By User)
Choose your date range
View and filter the report as desired.