Page modes are important. With page modes you can define the behavior of the visibility of text fields.
There are 2 page environments and 3 visibility modes
Page environments
First page: The first page of your invoice/quotation.
Next pages: The next pages of your invoice/quotation (2., 3., ... pages)
Visibility modes
First page
In all pages: The selected object should appear in all pages (example: page number, company name)
Only on this page: The selected object should only appear on the firsg page and not on next pages (example: billing address)
Only on last page: The selected object should only appear on the last page (example: total amount)
Next pages
In all pages: The selected object should appear in all pages (example: page number, company name)
Only on this page: The selected object should appear on all pages except on the first page (example: brought forward amount)
Only on last page:The selected object should only appear on the last page (example: total amount)