What most naturally follows?

How to create a group in marco polo
Open the marco polo app.
If you have family or a group of friends who are on marco polo, you can add them all to a group. Groups are ideal for families who need to communicate throughout the day or friends who like to share silly messages.
Like group texts, though, marco polo groups may result in everyone receiving lots of notifications. You should only add people to a group if you think they'll want to be a part of the group.