If you don't have one already, add a custom user field (admin / Users / Accounts / Profile fields) using the 'Text input' type with max length set to a small value e.g. 32. Select this field as part of user identity (admin / Users / Permissions / User profiles -> Show user identity - select it from the checkboxes). Edit a test user account profile and give them a value for the custom field. Create a course (or use an existing course) with completion enabled. Create an activity in that course with completion turned on (e.g. manual completion). Enrol the test account in that course. In the course (in the 'More' menu from the gear dropdown), go to 'Reports / Activity completion' EXPECTED: The report should have a column (near the name) for the custom field you created, and on the line for the test account, it shows the value you entered in their profile.