Installation procedure for most of sites is very simple and requires only a few clicks in the administration panel. But when it comes to Facebook and PayPal, a necessity of creating a special application comes into play. Installation manual can be found below.
To turn on the sign in mechanism for selected site, go to MODERATION / Shop behavior management and click on Login methods. Select site, that you are particularly interested in, from the list and fill in data required in the edition window. You can also assign a special discount for customers using particular login method.
Information for Facebook service: Enter data obtained during application creation in Application ID and Application SecretKey fields.
From now on a button of signing in with login data from selected site will be visible in your store: