The Page Setup Dialog can be used to configure various options related to printing out a workbook. Click on File Menu ▸ Page Setup to activate the Page Setup.
Remember that at any time you can click on the Print preview button to see what your document looks like with your selected options. See the Section 15.3 ― Print Preview
Normally the specified settings apply only to the current sheet. Select another sheet at the bottom of the Page Setup Dialog or select Apply to all sheets of this workbook. You can also save your adjustments by activating the save as default settings flag.