Turning off "Push Notifications" is not a great solution because it only works for that one user. Others still get motion alarms. So I submitted a request for a new feature:

Request for new Video Doorbell App feature “Device Sleep”
Please consider adding a “Device Sleep” toggle button on the main page of the mobile app. When SLEEP is ON, this would temporarily pause all motion, person or visitor notifications for that doorbell, for all users. A time limit would be appropriate, with values the user can set. A bold icon would indicate the device is in “Sleep” mode.

I think adding a simple "notifications icon" switch to the doorbell app home screen would be a very useful. The function of the icon could be the same as going into settings and toggling "push notifications" on or off. But this way users can quickly disable notifications while they are doing activities near a doorbell camera. If they forget to turn notifications back on, they are reminded on the home screen of the current setting.