Link Instagram Account
Now that you have created your Instagram Account, let's link that account to Facebook Business Manager.
If you are not already logged into your personal account, do so now.
Business Manager Settings
Select "Business Manager" to display a drop down menu.
Select "Business Manager Settings" to continue.
Hover your mouse over the "People and Assets" menu to display additional options.
Select "Instagram Accounts" to link your Instagram Account.
Select "Claim New Instagram Account"
Enter your Instagram Username and Password and select "Next"
Select which Ad Account you'd like to Link to. Select "Next" to continue.
You Instagram Account was added successfully and Instagram Account ID has been generated.
You've linked your Instagram Account to Facebook Business Manager!