This tool is used to manage a users preferred content types used when viewing content on the system.
Select the user and click on “User Viewing Types” in the User profile drop down
Add preferred content type
Select from the left column the content type you want to add as preferred content type and click the right arrow button to add it to the preferred column.
Remove preferred content type
To remove a content type from the preferred list, select the content type you want to remove and click on the left arrow button.