How do I set up the same print area and margins on multiple sheets?

Page settings for a worksheet can be copied to other worksheets with the following steps:

1. Activate the worksheet with the page settings you want to copy.

2. Hold down the Shift or Ctrl key to select multiple worksheets you want to copy the page settings to - you can also right-click on one of the sheet tabs and select the Select All Sheets from the menu if you want to copy the page settings to all worksheets.

3. When the worksheets you want to apply the specified page settings to have been selected, then click Page Layout, and click the dialog box launcher in the bottom RH corner.

4. Click OK on the Page Setup dialog box that pops out and you will copy all the basic page settings from the active worksheet to all the others in the current workbook.

5. You can click File > Print to preview the result.

UPDATE

I forgot to say: Be sure to ungroup your sheets when you're done, otherwise, while grouped, Excel will execute any action you take on all the sheets in the group.