Hi,
I am not sure whether this is going to work because the financial dimensions are linked to an individual transaction line.
From something that is shown in the header I would expect that it is valid for all lines selected in the form.
I assume that the reason for your pesonalization is that you do not want users to click / switch between the overview and financial dimensions tab, right?
If you want to get this properly done, you will need the help of a developer because you cannot simply shift the financial dimensions to the overview tab.
Best regards,
Ludwig