Indb setup

Hello everyone,

I have a project of multi-brand manuals (one manual each), however, I have being duplicating books and its respective chapters (indds) for a new brand. 
I am now organizing a common strutucture that all the brands use and pull these indds in the respective book of that brand. But by doing this, all the information of the foot are not correct with the dedicated chapters, meaning page/date and brandname. 
I have made this change so the maintaince of the manuals specially in the common structure would be 1-time thing across 9 brands instead, 1 each manual and to become more productive.

But how can I change the date/page and brandname without changing the common indds? Is there a way to define in the common indds or in the indb to overlap that information and put the same as the dedicated ones?

Thanks for the help