The easiest way is to use the same scripts and applications and adding a further field within the load which contained the source from the data are, like:
'north' as Source // or south
and then you could switch between those different source per selection in this field and/or use this flag-field within set analysis conditions and/or if the data of each region are confidently then is the using of section access common: Section Access.
As Marcus had suggested, use Section Access to achieve this.
And can i use a map to choose wich branch office i'm seeing?
Yes you can use use a map to show which branch is being view.
Check the below link on how to make use of a map object.