1. 1.Start Atmel Studio.
  2. 2.Go to Tools → Extension Manager → Online Gallery.
  3. 3.Select QTouch Library, click 'Download', and then install it.
  4. 4.Select QTouch Composer, click 'Download', and then install it.
  5. 5.Click the 'Restart Now' button in the Extension manager window.
  6. 6.After starting Atmel Studio, go to Tools → Extension Manager. Check that the QTouch library and the QTouch composer are listed and the status is enabled.