You can change document settings in the Inspector.
Units: The units used in the document. You can set the default units in the Preference.
Scale: A scale factor applies to the model. For example, the model is a cube with side length 1, and you set the Units to centimeters and the Scale to 10. The finished papercraft will be a cube with side length 10cm. You can also set this option more intuitively by typing the dimensions you want in the text fields below.
Paper Size: Choose a standard paper size or choose Custom and type the dimensions you want. You can set the default paper size in the Preference.
Use Flaps: Uncheck this option if you don't need the flaps.
Use Texture: Uncheck this option if you don't need the textures. After that, all the faces are filled with white.
Unlike the View Settings, these options do not only control how data appears in the views, but also affect the printed or exported templates.View Settings Tools