Follow the steps listed below to create hanging indent in Google Docs:
Step 1. Open the document on which you’d like to add hanging indent on Google docs.
Step 2. Select the text you’d like the hanging indent to be reflected upon
Step 3. Select the left indent from the ruler (highlighted in the picture below) and move it to the right on the ruler, here you could choose the intensity of hanging indent while moving it.
Step 4. Now select the first line indent from above the left indent and shift on the left side of the ruler.
Google docs hanging indent has now been applied on your text.