Change Page Size & Orientation Using The Template Editor
To edit the dimensions and orientation of your document, navigate to the Page Settings tab in the Template Editor. There, you will find options to adjust page width, height, and margins.
The page width and height settings are located on the left side of the Page Settings tab. You can choose from predefined Portrait or Landscape page layouts, which will lock the Width and Height fields, or choose Custom to edit the Width and Height fields yourself.
The page margin settings are located on the right side of the Page Settings tab.
The Unit of Measurement settings are located on the left side of the Page Settings tab. You can choose inches, centimeters, or pixels as your unit of measurement. Choosing a new unit of measurement will automatically update all other values on this tab.