How to Collab post on Instagram after you have posted it – editing collaborators list for more

In short, You can collaborate on an Instagram post, video or reel that you have posted. You can edit collaborators on Instagram posts and reels even after posting. You can either create a new post for collaboration or start a collaboration with other’s posts and publish that post on your account. Along with it, you can use Instagram's “add post to your story” feature for this.