It can be done programmatically for things like add-in creation, though I do not know if it can be done manually. What is the outcome you're looking for?
Thank you @Chancellor.Kurre,
I want to make the Panel with all the buttons I use if they can fit the screen, and hide or remove all the other Panels.
Programatically will do if no other way.
By the way: why I have level 8 (the person asking a question and not having the knowledge) and you have level 7 (the person answering and having the knowledge)? I should have level 3, maybe 4. Can I request a change?
Just adding the extra tab programmatically would leave you changing it in every environment(drawing, part, assembly). This may be what you want, but it should also be possible to pre-load these options. In any case, I'd try making an add-in that would just customize the ribbon. That way with any future installs or resets you just have to load in the add-in. Brian Ekins has a pretty good template that should be fairly straight forward with a bit of coding knowledge, or the people over in the customization forum may be able to help.
https://forums.autodesk.com/t5/inventor-customization/bd-p/120
https://ekinssolutions.com/wp-content/uploads/2018/11/CreatingInventorAddIns-AU2018.pdf
https://ekinssolutions.com/nifty_addin_template/
Thank you @Chancellor.Kurre ,
Would like to have one custom Panel for each environment but with different buttons inside.
Will take a look at the links you provided.