Green check mark on sites

I have the free avast and want to get the green circle with the check mark inside it when I search on IE, Firefox, and google chrome. How do I make that happen?

http://files.avast.com/files/marketing/materials/documents/v8/quick_start_guide_v8_avast_free_en.pdf

Thanks Eddy. Could not find it in the book. Looks outdated.

Anyway, I finally got it. In the browser, after you enable Avast as an extension, click on the Avast icon at the top. Select settings way down at the bottom. Put a check mark in the “Block web analytics by default”. Now I have the check mark next to the safe sites.