When you first open the Manage portion of Autodesk Revit Model Review you need to create and configure checks.
To begin, you can open up a Check File, defined with the .bcf extension, under the File pull-down. A predefined list can be found using the File>>Predefined flyout.
The check files can be hosted locally on each machine, placed on a network-accessible location, or a combination of both. The predefined list of rules is controlled by the C:\Program Files\Autodesk\Model Review\Model Review.config file which can be edited using the Profile pull-down. Editing this file also affects the drop down list in the Check portion of the tool.
Once the File has been opened, you will find a list of all individual checks. The interface is divided into two areas.
The top area contains a list of all the Checks. Selecting a rule in the top will change the details shown in the lower area.