So - searching more I did come across this.
New install content menu is missing - Support - TheForeman
in which the guru kvde advised
"You must follow the Katello instructions, not those for foreman."
FWIW I installed initially using Foreman :: Quickstart
Anyway in that post mentioned above, aruzicka follows up gvde with
" following instructions to install Foreman without Katello, so you don’t have the content related functionality available. If you want to have those, these are the docs to follow [Katello 3.15 Documentation - Installation](https://theforeman.org/plugins/katello/3.15/installation/index.html)"
But that URL doesnt exist - page not found
?
cheers
Ian