Create new Recognised Graph

Try as i might i cannot create another recognised graph (“With Logseq icon inside”).
In the documentation, a recognised ‘directory’ has a logseq icon.

Now I want at least 3 graphs for different ‘themes’ lets call it.

See the image why cant I create a new legitimate graph?
Note I am setting these up using the app on mac
I am using iCloud Drive folder on my mac desktop
I’m also not clear how I setup the one that does work either! eeek

On the Desktop App I can open these other ‘directories’ without a warning.
However on my iPad I get error ’ Please choose a valid directory’ …

my workflow includes heavy use of iPad and some use of iPhone also