Thanks Elliot,

I can’t use the “Add media button”, because what I want is to change the image of the element in the catalogue, and this has an especific button (“Cambiar Imagen” in spanish, I suppose it must be something like “Change Image”). This button opens a window to select the image from the media library, but this window doesn’t have sidebars and doesn’t allow to insert from URL neither.

Best Regards,
Alfredo