Note: The colored circle around the person's picture shows whether the person is available. For more information, see How can I tell if a person is online?
To open a one-on-one Conversation, use one of the following methods:
When viewing a Conversation, tap the person's picture in the Conversation membership bar, then tap Open One-on-One.
When viewing lists of people on the People page, tap next to the person, then tap Open One-on-One.
Anywhere else you see a person's name or picture, tap it to open their profile. At the top of their profile, tap Open One-on-One.