[Koha] Budgets in 3.2 Acquisitions

Hi all, I am probably jumping the gun here, but I am trying to understand the logic behind the new acquisitions module so I can load in our budgets in the most effective way. I understand that a 'root budget' is for a fixed period of time, and has sub-budgets. So is the thinking that you would create 1 root budget for 2009-2010 financial year, and then sub-budgets within that for each spending area ie Fiction, LargePrint, DVDs etc. Or, would you create a Root Budget for 'Fiction 2009 - 2010', and then another for 'Largeprint 2009 - 2010' and then another for 'DVDs 2009 - 2010', and then add sub-budgets to those. So for example 'DVDs 2009-2010' could have sub-budgets for 'Adult DVDs', 'Teen DVDs' & 'Junior DVDs.' Cheers Jo.