The QTouch method IAR Example project for the Tiny20 Evaluation Kit can be found in the following path.
\Device_Specific_Libraries\8bit_AVR\AVR_Tiny_Mega_XMega\ATtiny20\ tiny20_ek_iar_qt_example
The Example projects demonstrate the 5 button sensor configuration with a Sample LED application. The Example projects also support QDebug data transfer to QTouch Studio – Touch Analyzer PC Application.
It is possible to configure the number of Sensors in the Example project from 1 to 5 for testing on the ATtiny20 Evaluation kit.