The ability to add collaborators to an Instagram post after its initial publication is currently unavailable. The collaboration feature, which allows multiple users to be credited as authors of a single post, must be implemented during the creation process, prior to sharing the content. Once a post is live, the platform does not offer a direct mechanism to retroactively include collaborators.
The collaborative posting feature enhances content visibility and engagement by sharing the post with the followers of all contributing accounts. This expands the potential reach and impact of the content, leading to increased brand awareness and potential audience growth for all parties involved. Historically, without this functionality, content creators were limited to tagging individuals in the caption or image, which lacks the formal co-authorship designation and associated benefits.