1. Select Insert > Page Number, and then choose the location and style you want.

    Insert page number

  2. If you don't want a page number to appear on the first page, select Different First Page.

    Different first page

  3. If you want numbering to start with 1 on the second page, go to Page Number > Format Page Numbers, and set Start at to 0.

    Start at 0

  4. When you're done, select Close Header and Footer.

    Close header or footer

Source: Microsoft