To add a new page, you can use Control command NEW-PAGE in Transaction SE71.
NEW-PAGE [page_options] [ spool_options]
This statement creates a new page in the current list and writes the subsequent list output into a spool list.
In T-Code: SE38 Print Program, you can use Function Module CONTROL_FORM to call NEW-PAGE command as below −
CALL FUNCTION 'CONTROL_FORM' EXPORTING COMMAND = 'NEW-PAGE' EXCEPTIONS UNOPENED = 1 UNSTARTED = 2 OTHERS = 3.