To create a double page spread in InDesign, drag two pages together. To add a masthead from another document, create a transparent document with the masthead, crop and save as a Photoshop file, then place it in InDesign. Mastheads help with identity and recognition on shelves. Columns are made by changing the default paragraph style to have two columns. Page numbers are added in text boxes corresponding to double page spreads. Bylines identify article authors and are usually larger than the text.