In this tutorial video I go through the process of setting up a quadcopter with flight modes and switch sounds on your TX16S in OpenTX Companion and on the radio. This may not be exactly the same set up you want but I think it is a good starting point. Remember this is on the radio side of the set up you still need to go through the Betaflight settings. I purchased my TX16S from the Flying Robot Co in Cape Town. This is not an affiliate link but I want to share where you can get yourself a RadioMaster TX16S in South Africa. https://flyingrobot.co/collections/tx/products/preorder-radiomaster-tx16s-hall-sensor-gimbals Thanks for watching. Happy Flying. https://www.patreon.com/BillClark