Pivot Grid with NESTED X-Axis Values

PeopleTools 8.58, FS/SCM 9.2.47

Use Case: view see the count of transactions by year, by location

The Y axis would have count of transactions, but the X axis would have year, and within that Location, where each bar is the number of transactions for that year and location.

It seems like you can have only 1 x-axis element. You can add other elements, but they act as filters or something.

Is there a way to achieve the above? I could make a concatenated variable that is year+location, but that seems strange