Time to Set Up Facebook Ads and Business Manager so We Can Get Started
Once the business manager account is created...
All new businesses are able to create 1 ad account. Once there is active spend on your ad account, you can host a maximum of 5 ad accounts. There's currently no option to request additional ad accounts.
If you want to manage an ad account, there's 3 ways to add the ad account to your Business Manager.
Note: Deactivating an ad account doesn't delete the ad account from your business. A deactivated ad account still counts towards your ad account limit.
More on the 3 options:
A partner is another business with a Business Manager account. Another business might give permission to a partner to work on the business, but it won't grant them the ability to alter any assets or change anything about the business. An Admin must be the owner of the business to change business permissions. Before you can assign assets to a Partner, you'll have to add them to your business first.Add a Partner or Agency