1. A method comprising: displaying a calendar application; detecting movements of a user's hand in a three-dimensional space by an electronic device to select of persons to be invited to a meeting; interpreting the hand movements in the three-dimensional space to identify a Euclidean vector corresponding to a pointing direction of the user's finger from fingertip to finger knuckle during a pointing action; determining an audio command spoken by the user simultaneously with the pointing action to identify a gesture intended by the user to set up or manage a meeting among a plurality of persons; detecting a finger-snapping gesture, based on the interpreting, to generate a command to send meeting invitations to the selected persons to be invited to the meeting; and supplying the command to at least one of the calendar application and a conference system server to initiate the sending of electronic invitations to one or more persons.