Hello,
I have defined a header area with two attributes:

Editing the form gives the impression that they will be side by side, but in reality, they are placed one below the other:

Given the size they take up, I would like to have the option to truly have them side by side.
Furthermore, would it be possible to have a separating line between the header and the Main Content, without having to create tabs?
Thank you,
Have a good day,
Antoine