This is a simplified version of a post I made a couple of hours ago.
If this is contrary to etiquette then please advise!
It is best explained by looking at the attached.
When the user enters one of the 3 yellow cells (i.e. chooses a country) then ... this countries details should be displayed in full in the green section. Note that the source of all the end data is the table on the far left.
So, entering one of the yellow cell generates a "drill down" in the green area.
How can I achieve this?