Adobe InDesign CC - Section Options
In InDesign, it is possible to segregate the document into sections to specify different types of page numbers for different types of content. For example, if you’re creating a book, you might want to specify the beginning chapters such as Acknowledgements and Preface in Roman numerals, while the actual chapters have normal numbers.
To do this, you need to create “sections” of the document to tell InDesign that the numbering of each section is different. The section and numbering options can be accessed from the menu of the Pages panel.
Clicking the Numbering and Section Options… command will open a dialog box wherein you can specify the starting page number for the page that you’ve selected. You can also choose the style of numbering. The pages will follow the numbering system that you have chosen till you select another page and repeat the same process.
The new section will start from the new selected page and this time you can select another page numbering scheme.