(SOLVED) HA Supervised - Howto add custom card to lovelace

I did this in the ‘old’ (supported I know) HA Container by using the lovelace submenu in Configuration from front end.

I have moved to HA Supervisor and I can see the .js files in /usr/share/hassio/homeassistant/www (all good - and so are the other .yaml files in there) but I cant seem to find anyway in the front end to add resources. They used to be an option, but now all I see is as attached


Im sure it used to be across the top?

Here’s the config screen

Solved. Schoolboy error. Didn’t enable Advanced mode in my profile.