It is not the pc interface but the controller setup, the image shown above are the controller settings.

But, let it be just an hint on where I have to look for settings, and I had of course: the settings let me setup the hotbars I want be shared across all jobs (that means, if a hotbar is shared, it will not change when I change job), and which ones I want show on the screen.

Summary:
- I don't use controller. I use keyboard/mouse.
- even if I share none of the hotbars, each job have only one and one only hotbars setup
- what I'd like to have, is have different setups for same job, this does not exists today
- I'd like have that because PVP is a completely different use of things than PVE, for the same job you have
- when you change class/job, you are presented a fresh state of the not shared hotbars, that you will setup for the class you are playing: well, I meant the same thing happens if I enter PVP
- what I want, right now can be done only with macros