Layout of side by side subpages

Hello guys

I have a question about page layout. In my company we use Navision 2015 and we have a page that consists of several subpages. Two of the subpages, one contains a list view and the other a cardview, are side by side.
Navision automatically sizes the subpages that way, that the card sub page always gets 2/3 of the main form size and the list sub page 1/3 of the main form size. Even if the card sub page actually is smaller. Navision oversizes the card page and adds scroll bars to the undersized list page, which obviously is very suboptimal.



Is there a way to change that ratio?

Thanks in advace for the hopefully helpfull answers.