Report Writer: Grouping / Sub-Totals

When creating Report Templates, create the option to group results together, and create sub-totals for the groups.

I also want to be able to only output the sub-totals themselves, rather than the underlying data.

Examples:

I want to group the results by Department, and see a sub-total per department. I still want to see a row per employee.

I want to group the results across multiple Pay Periods by Employee, and only see one row per employee.

I want to run a report for multiple Employers across multiple Pay Periods. I only want to see one row per employee, and a sub-total row per Employer.