Find the Name of the JSP File

Note: JSP files are only used for legacy pages. In newer versions, UI Maps and Business Object UI Hints are used as alternatives.
In Utilities CC&B, navigate to the Pay Plan Maintenance page and find the section where the Start Date field is displayed. See in the screenshot below that Start Date is under the main section of the page.

Pay Plan Maintenance Page. Cursor pointing to the Start Date calendar field, located under the Main tab.

Pay Plan Maintenance Page

Determine the name of the program component we need to extend. Right-click on the page and select the menu option View Source.

Pay Plan Maintenance page. View Source appears on the options menu that is displayed when right-clicking.

Pay Plan Maintenance Page - View Source

View Source would open the page source in a text editor.

JSP Source Code View window on the Pay Plan maintenance page.

JSP Source Code View - payPlanMaintPlanPage

From the menu bar or the program file information section you can identify the program name as payPlanMaintPlanPage (look for the Program name in the source code comments).