How to Setup Line Spacing to Double Spaced: Your completed work should look like this: Click on Insert => Page Numbers => click OK and done since the default settings (align right and show number on first page) are perfect.Type your Last Name (no need to leave a space after your last name).Also notice the font is NOT Times New Roman => click on the font and set it to Times New Roman.Notice the Header is now opened with your cursor blinking on the left => click on the Align Text Right icon to bring the cursor to the right.To create a header with your Last Name and automatic page numbering on the top of every page, follow these steps. How To Create a Header in Word 2011 – Mac: Under Margins, change the margin for all sizes top, right, bottom, & left to 1.How to Set the Margins in Word 2011 – Mac: