I am trying to track data by using a reference in a separate column. For
example, If cell A1="Victor" I want to deduct the data assigned to him in
cell B1 on the condition that cell C1="Y"

So, If "Victor" is assigned to A1:A10, and B1:B10 is assigend 5 each
totaling 50, as Victor completes the assignment for each row indicated by a
"Y" in the next cell, I want cell D4 to reflect the open tasks while D5 will
reflect the completed.