Now that you have created a Facebook Business Manager (Oh, you didn't? Then hurry, check this article right here), it's time to add an Instagram business account to your Business Manager.
Before you begin
To add an Instagram business account to your Business Manager, you must have the username and password for the account.
The Instagram business account you’re trying to add can’t be owned by another business. Instagram business accounts can only be claimed by one Business Manager.
Only admins can add Instagram business accounts in the Business Manager.
If your Instagram business account is linked to a Facebook Page, you should add both your Facebook Page and Instagram business account to the same Business Manager. Learn how to add a Page to your Business Manager.
To associate an ad account with an Instagram business account, the ad account and Instagram business account must already be in the same Business Manager. You can't associate ad accounts to Instagram business accounts in a different Business Manager.
Add an Instagram account to your Business Manager
To add an Instagram account in your Business Manager:
Go to Business Settings.
Click Accounts.
Click Instagram Accounts.
Click the blue Add button.
Click Connect Your Instagram Account
Enter your Instagram username and password. Note: Instagram may send you a security code to the email or phone number associated with the account to verify your identity.
You'll have the option to select the ad accounts and Pages you'd like to assign on the next screen. Click Finish. You can also click the X skip this step.
Now that you have properly connected your Instagram to your Business Manager account, check How to connect your Instagram account to Drop.
This article is courtesy of MetaForBusiness