If your request is that there are differences in header chapters (the titles of this chapter are all headers, so you insert these section break correctly), then insert section break normally, and then click the link of the previous one to set your own header. Then, starting from the section 1 where the page number needs to be inserted (for example, starting from the first chapter of the text), first set the starting page number of the page number to 1 and the format to 123, then go to the next section, enter the footer and page number format, and select the previous section. The following are all set in this way. (In the 2007 interface, under the page number option, set the page number format in the header and footer menu in 2003.

The hand # button is there.