edit part properties on several pages

Hi

I would like to add some parts properties to the entire design. My design spans over several pages. I found that even if I select simultaneously all components on all pages I can only edit parts properties of the schematic page I am on. Is there a way to edit all parts in the entire design and not page by page?

Is it possible to add those properties permanently so each new design will have them and no need to do it again?

Thanks vadim