setting tax type 51 for PA

Hello All

I'm setting up a new tax for PA.

I have some question and would be greatful for any inputs..

a) Tax Type 51 is to be applied to a residence tax area or/and work tax area. I understand that Occupational taxes are generally determined based on work location, if this is so then do i need to let no changes be on Residence Tax types, and I need to make changes of tax types with a new tax type combo for only Work tax area?

b) Do I need to make any changes in the node "Tax Models (First time config only)"?

Thanks

Charlene