I appreciate the is question Margaret! It seems there are different ways to share Living Atlas Layers with the public. From the link you gave, there are directions for Story Maps and Configurable Web Apps. I have found it easy to do with a Map Series template.
I am wondering if it possible to share Living Atlas layers in a web map and/or presentation. I am currently assistning teachers who are submitting student Presentations, Story Maps and Configurable Web Apps for the Esri National K-12 contest. I am not sure what to tell them if they have a presentation with a living atlas layer that is not showing up to the public.
Any suggestions would be greatly appreciated!
Thanks,
Allison in Michigan