Dear Tableau

I am trying to map mortality data using geographical regions of the UK. These are a combination of Local Authority, Metropolitan Area and Country Council. The mortality data are from the Global Burden of Disease.

I have been using the tableauMapping.bi web connection for my maps. Some of the mortality regions map to the Local Authority Districts within this (see attached workbook). For the ones that don't, I would like to use the GB Ceremonial Counties from the tableau mapping web connector - but can't work out how to do this.

Any help, or suggestions for different mapping tools for this project, would be very welcome!

Thank you

Joe