When you get permission to join a swarm you enter the 6 letter code and are included in it.

You then can share your content and the other members of the Swarm will engage with it.

We’ve all been in the position of intending to respond to a post and then we get busy and forget about it and Content Swarm sends you a push notification to let you know and takes you to the post directly in the app where you can choose how to engage there.