3. Position the mouse
pointer on the hanging indent, it looks like this

and hold down your
mouse left button till it shows a double tipped arrow. Then
drag to the left or right to set
margin. Do the same with the ruler on the left to set the
top and
bottom margin.
To select Preset Standard Page Margin
Follow these steps:
1. Click on Page Layout on the ribbon
2. Click on Margin to drop down the menu, select
and click the margin you want from the option provided. (Normal, Narrow, Moderate, Wide, Mirrored)
How To create Custom
Margins Using Page Set Up
1. Click the Page Layout tab
2. Click the Margin button to drop down the menu, and
then click Custom Margins at the
bottom of the menu; the Page Setup
box will be displayed.
3. Click the
Margins
tab on the top left. Type in your new or custom measurement for the Top,
Bottom, Left, Right and so on...
4. You can as well
click the Page Orientation you want.
5. Click the Apply To
list arrow to choose which option you want (whole document or This Point
Forward)
6. You can view your changes as you do them using the page Preview
7. Click OK to
accept your settings.