Select the unit by which the paper is folded from [By Copy Job (Multiple Sheets)], [1 Unit], and [By Page].
When you select [By Page], enter the number of pages to be folded at one time.
[By Copy Job (Multiple Sheets)] is specified by default.
To use this function, the optional Finisher FS-537 SD or the optional Finisher FS-536 SD is required.