Log in as supervisor with access to required device.
Search for the recordings.
Select the required recording from the result.
Under playback icon, it will list features the supervisor has access to.
You require the download icon:
Click on download.
Your browser will usually by default place the file in your DOWNLOADS folder.
This file will not have the call details for the recording.
The file name will be the recording reference.
NOTE: If you do not have the download icon, you need to request access: