Currently, you can connect one social account from each network listed in the Settings >> Networks & Imports page (Google+, Twitter, Facebook Pages, etc.). We will be working to expand this limitation so users can add more than one social account from a particular network.
If you have any questions, please write us at care@nimble.com, initiate a chat from this FAQ, or join one of our Nimble Onboarding and Best Practices sessions, held every weekday at 9 AM PT.