How to stop motion notifications with Alexa?

Hi - new to the world of Ring - got a Ring2 setup reasonably easier, connected some phones and Alexa and then got woken up early morning by the milkman with a motion notification via alexa. So I noticed the "motion notifications" setting in the app - and I turned that off, but I've realised that this presumably only stops my phone from getting notifications - how do I do the same for the Alexa app? I can't see any setting for that - which seems rather limiting? I do want doorbell announcements - but I don't want movement notifications on her? Is this not possible? Tim