Wake-up using a pushButton (SEN0539-EN)

Hi all. In my project i need to wake up the VR module(SEN0539-EN) WITHOUT a spoken wake word but using a push button to trigger the listening command part. Also, i want it to be responsive, so when i wake It up, while i am pushing the button, i don't want it to tell me that it's ready to use but It start to listen and give me respinse code (as always). I asked in the comment section of the product, they answered me that there's a function that Need to be called but I cant find any documentation regarding this. Do you have any suggestions? Thank you. Obviously the first question Is more urgent!