Before you start, make sure that the Facebook account you're using to connect to Geckoboard has been granted a role in Business Manager for both the ad account and Facebook Page associated with that ad account. Read more about about Business Manager roles and permissions.
Add a new Facebook Ads widget from your dashboard.
Select a preset widget from the list, or choose to Build your own widget.
Click Connect via Facebook Ads on the connection panel. You'll now be asked to log into your Facebook account, unless you're already logged in.
Finally, you'll be asked to give Geckoboard permission to access your account.
To connect a different Facebook Ads account to the one you've already connected to Geckoboard, see connect multiple accounts to data sources.