Enhanced techniques for joining teleconferencing sessions

A method, comprising:

• receiving data indicating locations of a plurality of computing devices;
• determining that a subset of computing devices of the plurality of computing devices are co-located based on the data indicating locations;
• selecting a primary computing device from the subset of computing devices for operating in a primary mode of operation and one or more secondary computing devices from the subset of computing devices for operating in a secondary mode of operation;
• generating teleconference data comprising a plurality of streams associated with a teleconference session;
• communicating the teleconference data to the primary computing device;
• and
• communicating a sub-portion of the teleconference data to the one or more secondary computing devices, wherein the sub-portion comprises a stream that is selected form the plurality of streams based on an activity level.

A system comprising:

• one or more processing units;
• and
• a computer-readable medium having encoded thereon computer-executable instructions to cause the one or more processing units to
• receive control data from a plurality of computing devices;
• determine a subset of computing devices from the plurality of computing devices based on based on at least one of social signals, audio signals, or positioning data;
• determine a primary computing device from the subset of computing devices and one or more secondary computing devices from the subset of computing devices;
• communicate a first teleconference data to the primary computing device, the first teleconference data causing the primary computing device to display a first user interface arrangement having core teleconference control elements, the core teleconference control elements configured to control a state of the teleconference session;
• and
• communicate a second teleconference data to the one or more secondary computing devices, the second teleconference data causing the one or more secondary computing devices to display a second user interface arrangement having sharing control elements, the sharing control elements configured to receive a selection of content to share from the one or more secondary computing devices.