When you create an Instagram account there you follow other users and other users follow you. There are also some unknown people following you. They can see your posts, stories reels, profile everything. In that case, if you want to share some personal stories that can only be seen by some selected group of people then the CFS feature helps you in this. What does CFS mean on Instagram? CFS stands for Close Friend Story where you can create a list of some close friends. When you choose CFS on Instagram only selected people can see your story.