This article presents a detailed guide on creating headers and footers for printing in PowerPoint.
Step 1: Go to Insert -> Text -> Header & Footer:

Step 2: In the Header and Footer dialogue box - select the Notes and Handouts tab, check the Date and time box to display the date and time, check the Page number box to show page numbers on the Slide when printing:

Step 3: Generate the headings:
- Check the Header option to create a header for the top of the Slide -> input the desired content in the blank section.
- Check the Footer option to create a footer for the bottom of the Slide -> input the desired content in the blank section.
Finally, select Apply to All to complete the process of creating the headings:

To print with header and footer, simply go to File -> Print option. It will automatically generate headers and footers with date and time included (as shown in the image).

Above is a detailed guide on creating headers and footers when printing in PowerPoint.
Wishing you all success!