Hi Luck,
Remove all fields from PivotTable areas, then drag the Name field to Rows area, and drag the SoldFor field to Values area.
This is will give you each employee and the sum of his sales.
The sum is the default function here, but you can change it to Max.
To do so, move the cursor to any cell in the Sum of SoldFor field, right-click, and select Summarize Values By >> Max.
After that, you can this formula to get the ID for each Max value.
=INDEX(Table1[ID],MATCH(F2,Table1[Sales],0))

Hope that helps