For when you need Teamspeak or some other external software for your comms, enable PTT_KEYBOARD_PRESS and set your desired keyboard combo. It will disable one of joystick buttons (you can choose which one, trigger PTT it a default setting) and press the selected keyboard combo instead.
#define PTT_KEYBOARD_PRESS 0 // set to 1 to enable keyboard combination press instead of a joystick button
#define PTT_BUTTON 4 //1st button is 0, 4 should be PTT trigger position
// this should press CTRL + Q
#define PTT_KEYBOARD_KEY ‘q’
char PTT_KEYBOARD_KEY_MOD = KEY_LEFT_CTRL;
Download an updated .ino file from GitHub.