Once you’ve setup your Facebook Business Manager account, you will need to add either an existing ads account or setup new billing details. Attaching an ads account will ensure your payment details are assigned to the Business Manager account.
To attach an existing Facebook Ads account to your Business Manager account:
- Under Business Settings, find Ad Accounts.
- Click the Add new Ad Account
- If you don’t already have a Facebook Ads account you will need to select a, otherwise select b.
- Now you will need to find your current Facebook Ads Account ID and enter it into the box.