Shared User does not receive Alexa notifications

Hi there, I have installed the Ring Video Doorbell 2 and I am the main account holder on Ring.We have 2 Alexa devices - one is signed in as my account and the other as my wife who is a Shared User on the Ring account.Doorbell Press Announcements are active on both accounts in the Skills settings on Alexa but only the device signed in as me creates a notification / chime / announcement.Do all Alexa devices have to be signed in as the main Ring account owner or have I set something up incorrectly?Thanks in advanceRichard