I’ve converted the default header, which is floating, to a reusable element, right-clicking on it and choosing “convert into a reusable element”.
Now I would like to convert it back to a floating element, which mean I could see these options in the inspector:
Problem is, there’s no way to convert it back to what it was originally. On the forum I’ve seen suggestions like embedding the reusable element in a floating group, which is ok, but it’s not how it was originally.
It looks like the default header is a sort of “reusable floating element” that cannot be recreated if accidentally deleted and its best approximation is creating a floating group containing the reusable element.