Determine what kind of numbering you want to use for your document or book. For long documents, you can assign chapter numbers. Each document can be assigned only one chapter number. If you want to use different numbering within a document, you can define ranges of pages as sections; these sections can be numbered differently. For example, the first ten pages of a document (the front matter) might use Roman numerals, and the rest of the document might use Arabic numerals.

Big project due tomorrow, and upon importing pages from another document, the new pages didn't follow the page numbering I had set. When I imported them at the back of the document, the first page started at 1 and went consecutively in order. This is not right, and I know it has something to do with the sections, however, I CANNOT for the life of me figure out how to just erase the section settings completely, or to revert everything back to having only 1 section (so there can be a consecutive page count throughout the entire document). This has also messed up my A-master page numbering, as this has reset to 1 as well, and even reapplying the A-master doesn't shuffle the page numbering into the actual page that it is (It's supposed to be page 70, but kicks back all the way to 1.)
Numbering and Section options are available in the Pages Panel menu. These options allow you to define what page starts a section and how it should be numbered. A Current Page Number marker must be set on pages in order to use this feature. The Current Page Number is a special character inserted in a text frame on a page or master page (recommended) where the page number will appear, by selecting Type>Insert Special Character>Markers>Current Page Number.
I have a document where in I have to make two kinds of page numbering, A catalog (individually made) which should always start at page 1, and the other is a compiled version where the pages should be a continuous page. They both have the same content but with different output so I tried using layers, but fail to set the page numbering to auto. because setting them would affect both layers.
A best practice that we recommend to our clients is to create a base/folio master –with styled and positioned footers and current page number special characters– on which all other masters are based. This allows a footer that may contain date or issue information to be updated once and the changes are reflected in all of the master pages. If your masters only have current page number special characters then you can just add them to each master and the page numbers will be reflected when each master is applied to your document pages. document numbering in indesign