You can change or add to your connected social media accounts (Facebook, Instagram, Twitter, LinkedIn, YouTube) by first clicking on the Ripl Menu in the top left corner of the home screen, then select "Account Settings." On this page you should see the option to connect or disconnect your social account. 

You can connect any Facebook Pages or Groups that your personal Facebook account is the Admin of, and as many Instagram, LinkedIn, YouTube or Twitter accounts as you'd like. 

If you're having troubles disconnecting your Facebook account from the Ripl app, see this article: Connecting to the Wrong Facebook Account