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 tap "Business Profile Settings." On this page you should see the option to tap the "+" button under "Social Media Accounts" to connect all of your social accounts. 

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