How disable Wifi on Balance One built-in radio when adding a One AC Mini?

I just added a One AC Mini. I only want to use that wifi access point, not the one within the Balance One. I can’t figure out how to turn off the wifi in the Balance One without disabling the radio in the One AC Mini, and still allowing me to manage the access point from the Balance One.


Please find the attached. Please turn off Wifi AP. You still able to manage external AP after you turned off the Wifi AP below.