2. Find the following assistant options in the editing page, and click Assistant to enter the assistant page.
3. Enter the word header in the assistant page, and click the option of inserting header and footer shown above to enter the header and footer setting page.
4. Click on the blank space of the header in the header and footer settings page to bring up the soft keyboard, and use the soft keyboard to input the contents of the header to be set.
5. After setting the header, click the "Go to Footer" option on the left to go to the footer setting page.
6. Click on the blank space of the footer setting page to bring up the soft keyboard, and use the soft keyboard to input the contents of the footer to be set to complete the footer setting.