Layout > User Interface Basics > To Set the Sheet Format
  
To Set the Sheet Format
1. Click Format in the lower-left corner of the graphics window. The Format dialog box opens.
2. Choose one of the following methods to set the sheet size:
Select a standard format from the list and select the unit of measure.
Click Custom Size from the list. Type values for the width and height, and select the unit of measure.
Click Browse and browse to a predefined format.
3. Click OK. The format label updates.
4. To copy sheet labels to a new format, click Keep or Keep All. To remove sheet labels from the new format, click Remove or Remove All.