Whether you want to add a Facebook page or a Twitter profile, the steps that you should follow are exactly the same.
Step 1: Click on "Add Social Profile"
Step 2: Type the name of the brand that you're looking for and click 'Enter'
Step 3: Click on "Add profile" (for the profile that you want to analyze)
Another way to add the profile that you want is by copy-pasting the URL in the search bar.
After you add the profiles to your project, you can see them in the Home section or in the list of profiles from the sidebar.
Have trouble adding a YouTube channel? Here's how to do it the right way.