How to activate Bluetooth add-on handsets?

According to BA, the BT add-on listener should activate when removing from the storage tray. with him should be able to make calls from the call lists, look through the phone book, accept calls, stop, etc. when connected, a corresponding icon appears on the rns display, next to the BT icon. more is unfortunately not included in the BA.WAS TUN, however, if this (the add-on listener) only displays “Please wait…”? can one somehow perform coupling or reset? or is there a special key combi? what do you need?vcds? which stg? a reset-hole or similar I have not found. and especially at vw I know, I don’t like to ask them at all… THANK YOU