Procedure for Date Stamp (classic)

Press [Edit / Stamp].

Press [Stamp] twice.

Press [Date Stamp].

Press [Change Format].

Select the date format, and then press [OK].

Press [Change] under [Stamp Position].

Select the stamp position, and then press [OK].

Press [All Pages] or [1st Page Only] to select the print page.

Press [OK] three times.

For details about stamp positions, see Stamps.
You can change the settings for Date Stamp under [Date Stamp] in User Tools. For details, see Date Stamp (Copier / Document Server Features).