There are two ways in which you can do indentation.
1. If the paragraph has already been typed, then click on the start of the first line and then press tab key. So the first line gets indented.
2. If you would like to do this by default for all the paragraph, then
a. Place the cursor anywhere within the paragraph limit=>Goto home tab=>Click on normal and right click to select the option “Modify”
b. Select Format=>“Paragraph”. Press the” indent and spacing” tab, under the “indentation” select the “First Line” from the combo box.