Insert section break on the first and fifth pages, and then click Insert-Delimiter-section break-Next Page.

Select View-Header and Footer, and you can see Section 1, Section 2 and Section 3. Select the numbering formats I, II and III in the page number format on page 2, select the starting page number 1 for the page number layout, click OK, and select the link to the previous page in the header and footer edit bar. In addition to selecting the number 65440 in the page number format, it is also set on page 6.