How to setup a Facebook integration
First, navigate to the campaign where you'd like to connect the Facebook integration, then click "Integrations" from the menu on the left side of the screen.
Click on Facebook in the list of available integrations.
Then click Connect Account.
You will then be prompted enter the appropriate Facebook credentials. From there, select the customer account which you would like to connect. Click the radio button next to the appropriate account, then click "Save".
If the account that you would like to connect is under a different Facebook account, and you need to enter different credentials to access that account, click the button that says "New Account", then enter the appropriate credentials, and step through these screens again.