Joe,
Difficult to say with the picture you posted and I understand you cannot share sensitive data, although you could easily put together a sample with dummy data, that would not take more than 10 mins, keep this is mind in the following doesn't help
1st of all, you've probably observed I rename almost all APPLIED STEPS created with the UI. Simple reason is I hate reading i.e. #"Grouped Rows"
So you can follow I don't do that below:
#1 Once you've referenced your data Table to build your Result query, in PQ you see something like
#2 Select columns [Product Type] and [Territory] > Go to Transform tab > click the little arrow down icon next to Unpivot Columns > choose Unpivot Other Columns. You should get:
you see that by default unpivoted columns are named [Attribute] and [Value]. That's where I "cleverly" made a modif. At the end we want a [Date] column. So we could continue the default [Attribute] column name but then we would need an additional Step at the end to rename that column => [Date]. To prevent this, just edit the Step in the formula bar and change the string "Attribute" with… "Date" :
#3 Select column [Date] > in the Transform tab, next to Data Type, select Date in the list:
#4 Select columns [Product Type], [Territory] and [Date] > Right-click > Group By… use the following:
OK ==> Done!!!