What do the following parameters mean/do?
These are parameters used by the following reports:
Incident Cost Details for Top Categories
Incident Cost tread details for Top Categories
Incident Effort details for Top Categories
Incident Effort Tread details for Top Categories
Incident Volume details for Top Categories
Incident Volume trend details for Top Categories
How are these parameters used, and what are the functions of the sub-reports?
In summary, the items are input parameters that are cast as specific variables. They are then used by sub-reports to ensure the correct data is being returned. In this case, the parameters are linked to the Incident Volume, Effort and Cost sub-reports. These sub-reports are all used by the main Analytics report titled "Service Demand - Incidents", to return all related data regarding Incidents.
When a user with the out of the box ROLE_USER role accesses the repository, they will not see these sub-reports. In order to utilize the sub-reports, the user will need to run the main "Service Demand - Incidents" report, which will query them for the required parameter information.