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We present a multimodal system for creating, modifying and commanding groups of robots from a population. Extending our previous work on selecting an individual robot from a population by face engagement, we show that we can dynamically create groups of a desired number of robots by speaking the number we desire, e.g. “You three”, and looking at the robots we intend to form the group. We evaluate two different methods of detecting which robots are intended by the user, and show that an iterated election performs well in our setting. We also show that teams can be modified by adding and removing individual robots: “And you. Not you”. The success of the system is examined for different spatial configurations of robots with respect to each other and the user to find the proper workspace of selection methods.