OK Joe here is where you will find what you are looking for. I’m forcing you to read. ha ha ha

YOU CAN SELECT WHAT YOUR EXPRESSION PEDAL CONTROLS.
In your Technics instruction book (manual) Page 155 (bottom of the page) and Page 180 Expression Pedal

MIKE SETTING CAN BE PROTECTED.
Page 67 Expanded panel memory and page 184 Data Protection.

If you do not understand what is written please let us know.

John C.