The document will need to have a section break at the end of the text on page 2. This will break the document up into sections (chunks). Each chunk can have its own page numbering. Be aware that by default each section header and footer will be linked to the previous one so you will need to unlink the footer from section 2 to the section 1 footer. You can find this option on the headers and footers toolbar. Its called 'Link to Previous'. Once this is done you can insert page numbers (in section 2 footer) via the menu: Insert >> Page Numbers.

Let me know if you need further assistance with this.