The present disclosure provides a number of techniques for enhancing a user's experience when joining teleconference sessions. When multiple users join a teleconference session using separate devices, a system identifies devices that are co-located. The co-located devices are identified by the use of a combination of data including, but not limited to social signals, audio signal and other location data. At least one device of the co-located devices, has a first control set for controlling a teleconference session and other devices of the co-located devices have a second control set for sharing content. The at least one device also has one set of streams and the other devices see a subset of those streams or other streams based on an activity level. In addition, the present disclosure provides a number of techniques for enabling users to use multiple devices to share content.