...
Roll-Up Report type: Click the required report type - Epic Roll-Up, Sprint Roll-Up, Fix Version Roll-Up, Agile Board Roll-Up, Issue Type Roll-Up, and Custom Roll-Up to view the Roll-Up Report.
Custom fields: Provides various custom fields based on the chosen report type.
Columns: The columns drop-down contains all the standard Jira Text fields, Date fields, and Numeric fields. You can select the required fields and click Done to add to the report result.
Projects: The Projects drop-down list all the projects. To view the report result for specific projects, select the required projects and click Done. The Projects drop-down gets prefixed with a filter icon to indicate that the report result is for specific projects selection.
Other custom fields: Based on the selected report type, other custom fields are displayed such as Epic Status, Sprint Status, Fix Versions, Issue types.
Actions allow you to save selections for the report type, download the report, and refresh the report result.
Save Selections: Once you change your selections for report result, the Save icon turns red. The red mark save icon indicates that the selections are not saved. To save your selection configurations of report type for the next time you revisit the report type, refer Save Roll-Up Reports Selections.
Export to excel: To download the result of Roll-Up Report type, click Export to excel. The report is downloaded in Excel format and can be viewed in downloads.
Refresh results: To refresh the report, click Refresh results.
Report result: Report result displays the report for the chosen report type. Custom fields can be added to the report as required.
...