Centre in Margin rather than page

Hello. I have found a way to create a margin that reflects the drawing area of my page. I would like the ability to centre items in the drawing area, rather than the page. The information in the title block offsets the “visual centre” of the drawing to the centre of the drawing area, rather than the page, and it would be nice to be able to centre elements to that point. You don’t have to remove the other options to centre on the page, but it would be helpful to have one to “Centre to Margins”

Thanks