1. First, open the file with a pdf editor, and then click File-New.
2. Then click the Edit Content tool above.
3. Click "Document"-"Header and Footer".
4. Click "Add" button.
5. In the corresponding text boxes, select the position of the header and footer.
6. Then click Page Number and Date Format to format the page number.
7. In the page range, select the specified page where you want to insert the footer.
8. Finally, click OK after all the settings are completed, so that the problem can be solved by adding or printing.