How to configure the Recording Backend

What exact address and shared secret should be written in the recording backend settings. Should it be the address and secret of the TURN server or the address and secret of the High-Perfomance Backend or something else? Regardless of what I record in the settings, the inscription Recording Started appears and the gray recording icon disappears after a few seconds.

Please use the search - lot of issues have been discussed already e.g. there is long discussion about exactly this question:

The problem: there is no step-by-step documentation