How to set app sounds for Guest (non-admin) users

I can set app sounds for admin users in the settings of the Batterydoorbell, however those menus are not available for Guest users. How can a guest user set his app sounds?

We really appreciate you reaching out and letting us know your concern.

Please noted that the app sound setting can only be adjust by the Main/Admin account.

Apologized again for any inconvenience caused. Any other concerns we can address in the future, please feel free to contact us.

Thank you for your support. Have a lovely day.

That is indeed what I found out: only the admin can change the sound for the app on his own phone. The sound for the app on the guest/family phone can can not be changed.
I suggest to update the app so the guest/family account can change its own sounds.
(bypass is now to give the family members all admin rights, although that is way too much power)