Thanks.
I think the confusing part for me is, if I go to add code via "Website>Website Tool>Custom CSS" I don't see the "UPGRADE" marker at the top of the menu panel.
When I add code via "Website>Website Tool>Code Injection" I see the "UPGRADE" marker at the top of the menu panel.
So it seems confusing to me. Which is why I though adding Custom CSS could be done on a personal plan.
Cheers
Michael