One of the important things you need to do when setting up a business is to setup a Facebook Business account. To do so go to the Facebook Business Manager page and click the Create Account button, then enter the name of your business and email address.
You will also need to add an ad account to your Business Manager. Once the ad account is added, it’s permanently moved to Business Manager. To add a new ad account, click Business Settings in Business Manager, click on Accounts, and then click on Ad Accounts. You should see a dropdown menu with three options, one of which being to add a new account. Then proceed to complete the process.
To add Gravity or another agency to help you with your Business Manager, you need to go to Business Settings, click Add People, and type the email address of the agency you want to invite. Lastly, you will have to click Next and select the role you want to assign. Remember to also give access to the appropriate Facebook Page and ad account.