Define Your Pages
When you create a new InDesign layout, specify appropriate dimensions for your magazine, as you would for any layout.
Be sure to set the number of pages and check the "Facing Pages" box. Now you can set up your master pages that will include your header and page numbers.
To create your master page, click the "Pages" window or press the <F12> key.
Now, double click the "A-Master" and create your master pages. Here you can add your page numbering, background images, headers, etc. that will form your magazine. Master pages work to give your publication a consistent look throughout, so you can set your basic layout and then create as many pages as you want throughout your document with the same look. Once you apply your master page to an InDesign page, you can add content to it as necessary to create your magazine.
Creating a new master page is easy. First right click on the top section of the pages window and then choose "New Master."
The master page forms the basis of a page design. Once you have it configured, you can apply it to any page you create.