Source: Meta Business Manager Help Article
Before you begin
The steps below only apply if you’re trying to add an Instagram account to your business portfolio on Meta Business Suite desktop. Learn more about how to add your Instagram account on Meta Business Suite mobile app.
You’ll need an Instagram account for your business. Learn more about how to create an Instagram account if you don’t have one.
Make sure you're working in the correct business portfolio in the top left dropdown menu.
To select a different business portfolio, click the dropdown menu. Then select the business portfolio.
Adding an Instagram account to your business portfolio does not automatically connect that Instagram account to a Facebook Page. Follow the steps in this article to connect your Instagram account to a Facebook Page.
Connect an Instagram account to your business portfolio
In Meta Business Suite desktop, click Settings from the sidebar on the left.
Click Business assets.
Click Add assets and select Instagram account.
Review and agree to our terms for connecting your Instagram account, then click Claim Instagram account.
A new window will open. Enter your Instagram username and password, and click Log In.
If you’re already logged in on Instagram, you can also click Continue as [Instagram handle] if that's the account you want to connect to. Otherwise, tap Switch accounts to log into another account.
If your Two-Factor Authentication is turned on, we’ll ask you to enter in your security code.
Click Confirm.
You'll see a confirmation message that your Instagram account was added successfully. If the connection is unsuccessful, learn how to troubleshoot possible errors and connect your Instagram account in Meta Business Suite. You may be asked to log in to your Instagram account once more to access settings that let you give people, partners and apps access to manage that Instagram account.
Once you connect an Instagram account to your Facebook Page, you can directly manage your business’s activity across both Facebook and Instagram. For example, you can now schedule posts, respond to messages and comments, create ads, and see insights across both Facebook and Instagram. This can help you save time and make it easy to manage your business presence in one place.