Each section within an InDesign document can be numbered differently. This allows you to use one type of numerals to consecutively number a document's preface or other introductory materials and another numeral system for the remainder of the document. You must first define your document's sections, and then you can add section markers or page markers to your master pages. Apply the master page to document pages to include the section and page numbers on the document pages.

If you’re a self-taught InDesign user, you may not have been introduced to automatic page numbering, one of the biggest time-saving features in the program. InDesign allows you to set up the page numbering feature in your Master Pages. Then, as you add or shuffle pages, InDesign updates individual page numbers accordingly. You can style the page number any way you like.
First thing we need to do, is we need to jump to page 1. So double click page 1, so we know we're on it. Right click page no.1, and we need to go to this option that says 'Numbering & Section Options'. Click on him. And what we do is, we say, I want to switch it from style 1, 2, 3 to A, B, C. Actually you pick any of these in here. It's really typical to use A, B, C, but you can use any of these other numbers, just click 'OK'. You'll notice that A, B, C, D, E is being replaced out. Now what we want to do is go to our first page that we want. In our case it's E. So I don't want this. Let's get rid of our Spreads. I don't want page 1, page C, or B. I don't want this to be page1, I want this to be page 1. So I'm going to double click page E. Right click it, go to 'Numbering & Sectioning'. And just say, I'd like to start at page no. 1 using this format. Click 'OK'. What will happen is, you can see, page 1 starts here, 2, 3, 4. You see, the numbering starts here as well. All the way through, to the end of our document.
Bullets and Numbering options in InDesign aren’t just for boring lists. You can auto-number items like captions, even incorporating prefixes like figure labels. Depending on how your document is set up, there are two ways to achieve this. Both involve setting up a paragraph style that incorporates numbering from the Bullets and Numbering feature. Generally I create a temporary text frame—often on my pasteboard—and set some items to create my style, pasting the text into my actual caption frames after the fact.
While InDesign veterans may assume everyone already knows this, I can assure you I have worked with very sophisticated documents from designers who did not take advantage of this basic feature. A good rule of thumb to keep in mind as you tackle InDesign challenges is this: If it’s repetitious, tedious, or time-consuming, there’s probably a built-in solution right there in the program. You just need to go look for it.
In bulleted lists, each paragraph begins with a bullet character. In numbered lists, each paragraph begins with an expression that includes a number or letter and a separator such as a period or parenthesis. The numbers in a numbered list are updated automatically when you add or remove paragraphs in the list. You can change the type of bullet or numbering style, the separator, the font attributes and character styles, and the type and amount of indent spacing.