I'm guessing that this stems from your previous post (Quartile based on a Percentile table) where you were using RANK_PERCENTILE. If so, is that how you'd intend to establish the quartiles? I'm going to assume so, but if that's the case, I should note that your quartiles above do not match the quartiles which would be calculated using RANK_PERCENTILE.
Start by doing your ranking. You'll need 3 calculated fields--one for each of your 3 measures. Here's an example for Units:
RANK_PERCENTILE(SUM([Number of Units]))
Then you can use this to determine your quartiles.
IF [Rank Units]>=.75 THEN
ELSEIF [Rank Units]>=.5 THEN
ELSEIF [Rank Units]>=.25 THEN
I won't include them here, but you'd create calcs like these for Total Value and Avg. Effort Score.
Then you'd create a new calculated field which averages these values:
([Quartile Effort]+[Quartile Units]+[Quartile Value])/3
Then you can add them to your view. The calcs will be table calculations, so make sure they are each set to compute using Sales Person.
Here's the final result:
I've attached my sample Excel data source and the packaged workbook.