Community admins can enable social login options, such as Google, Facebook, LinkedIn, Twitter, and Slack for their Tribe communities.
But first, you need to install the Social Login app from the Admin Panel> App section. How to install an app to my tribe community?180
When the app is installed, click on the "Social Login" app under the App Settings in your admin panel:
Pick the social login options you want to be added to the community registration page, then fill out the setting sections for each, then update the changes.
Still have a question about the Social Login app? Please check this Q&A page16.