Instagram is where your Reels and posts reach your followers. Once you connect your professional account, Marketing can read your posts and how they did, and publish a finished video as a Reel with its caption and cover.
Switch your Instagram account to a professional account (Business or Creator).
In Meta for Developers, create an app with Instagram API with Instagram Login and the instagram_business_basic and instagram_business_content_publish permissions.
Generate a long-lived access token for your account.
Open Integrations, pick Instagram, paste the token, switch on the live option, and press Connect.