I am trying to explore the idea of hosting our own version of the minimalist app, to support adding page surrounds etc, extra features.
I have noticed that my developer version of AGOL has the modern updates (ie express setup), but a lot of the documentation around configurable apps is for the old version.
Regardless of all this, in the dev AGOL how might I get my self-hosted minimalist template working and configurable? It will open for configuration, but the express selections for a map don't do anything, and also switching to full doesn't have an effect. I have tried pasting various examples into the Configuration Parameters section (old and maybe new?), and nothing seems to make a difference. Clearly I should be pasting something, but I'm not sure what.