Disclosed are a display device and a method of setting group information by displaying additional information to be added to base information via first and second gesture inputs. The display device includes a display unit configured to display visual information, a sensor unit configured to detect an input signal and transmit a detected result to a processor, and the processor configured to control the display unit and the sensor unit. The processor is configured to display base information, detect a first gesture input to the displayed base information, determine an interval of additional information based on a position of the detected first gesture input, detect a second gesture input, determine the number of additional information based on a position of the detected second gesture input, and display at least one additional information according to the determined interval and the determined number of the additional information.