How do I insert a page number from the third page in Word

I've never been able to figure out how to insert page numbers from Page three in Word. Today I finally understand, and now share with you:

1. The cursor moves to the beginning of the second page and clicks "Insert-separator-section break type-Next page-OK".

2. The cursor moves to the beginning of the third page, repeating step one.

3. The cursor moves to the third page any position, clicks "Inserts-the page number-the format", the format selects "the page numbering-starts page number" is 1, clicks "OK" to exit.

4. Double-click the third page number, the Header and Footer toolbar, the "link to the previous" button to click on the gray, click "OK" exit. (The purpose is to cancel each section of the page number and the previous page number so that you can delete the previous two pages)

5. Remove the page number on page first to second. Complete.