When you're working on a document such as a magazine or a book with many pages in it, using the master page feature in Adobe InDesign CC 2015 to insert automatic page numbering simplifies working with the document. On a master page, you designate the position, font, and size of the page numbers and any additional text you want to accompany the numbers such as the magazine name, date or the word "Page." Then that information appears on every page of the document along with the correct page number. As you work, you can add and remove pages or rearrange entire sections, and the numbers remain accurate.
Warning  Making even minor changes to an outline numbering scheme won't necessarily change the initial position you've selected in the gallery, but rather may create a new gallery position, overwriting an existing one. Because of this problem, attaching numbering to styles is strongly recommended. This is covered in greater detail later in this chapter and in the chapter on Styles.
In the Adobe InDesign document I’m working on here we actually have two master pages, an ‘A’ master and a ‘B’ master so I’m going to select both the left and right hand page frames with the special character in on my ‘A’ master and go to Edit>Copy. I’m then going to double click on my ‘B’ master page and go to Edit>Paste in place. this will then copy the special character and position it in exactly the same place as it appears on my ‘A’ master. numbering in publisher