Supported Summarize-By Fields for Reporting

The currently supported Summarize-By fields include:

Employee Fields Employee Group The report will create a summary row or group for each distinct employee group for review subjects with forms included in the report.
Manager The report will create a summary row or group for each distinct manager of review subjects with forms included in the report.
Hire Date The report will create a summary row or group for each distinct hire date of review subjects with forms included in the report. Dates can be grouped by year, month, or quarter.
Termination Date The report will create a summary row or group for each distinct termination date of review subjects with forms included in the report. Dates can be grouped by year, month, or quarter.
Custom Numeric Fields The report will create a summary row or group for the various ranges of values (bins) reported across the custom numeric data field. Values can be grouped by 5, 10, or 20 bins. 
Review Cycle Fields Review Cycle Name The report will create a summary row or group for each distinct review cycle name of review subjects with forms included in the report.
Review Cycle Status The report will create a summary row or group for each distinct review cycle status of the review cycles included in the report.
Review Cycle Start Date The report will create a summary row or group for each distinct review cycle start date included in the report. Dates can be grouped by year, month, or quarter.
Review Fields Review Subject The report will create a summary row or group for each distinct review subject (employee) with forms included in the report.
Review Status The report will create a summary row or group for each distinct review status of the reviews included in the report.
Review Start Date The report will create a summary row or group for each distinct review start date included in the report. Dates can be grouped by year, month, or quarter.
Review Completed Date The report will create a summary row or group for each distinct review completion date included in the report. Dates can be grouped by year, month, or quarter.
Review Form Fields Review Form Name The report will create a summary row or group for each distinct (type of) form included in the report.
Review Form Status The report will create a summary row or group for each distinct form status of the review forms included in the report.
Review Form Signer Due Date The report will create a summary row or group for each distinct signer due date included in the report. Dates can be grouped by year, month, or quarter.
Review Form Author Due Date The report will create a summary row or group for each distinct author due date included in the report. Dates can be grouped by year, month, or quarter.
Review Form Completed Date The report will create a summary row or group for each distinct form completion date included in the report. Dates can be grouped by year, month, or quarter. 

We're continuously enhancing and adding support for additional summarize-by fields.  Please don't hesitate to contact customer service with suggestions for additional fields you would like to see supported.