Message presented for call screening

Zoom Phone includes a Call Screening feature. (Phone/Settings/Other) I like the feature, but I would prefer to customize the message. (the default is "Hello. This user's calls are being screened. Please press 1 to reach the user.") Zoom phone provides ways to customize all the other possible messages you might want, but I can't find any setting to edit this message. How can this message be changed?