Calculate total adjustments for each sales person

Hello, I hope I describe this correctly but I hope you can all help:

I am putting together a performance summary worksheet which monitors a teams sales throughout the month. Every so often there may be reason to adjust sales from one person to another:

In column A you enter the week number which is chosen from week 1,2,3,4 or 5
In column B there would be the name of the sales person (chosen from a drop down list) the sales value is adjusted off, lets call them RSC1
In column C there would be the name of the sales person (chosen from a drop down list) the sales value is adjusted on to, lets call them RSC2
In column D is just a reason for the sales figure adjustment
In column E would be the monetary figure to be adjusted, lets say RSC1 accepted a refund for RSC2 of £2000
In column F is a transaction number used purely for reference purposes

I would like to find all instances of adjustments in week 1,2,3,4 and 5 for every team member (of which there are 21) so at the end of each week, a single total value to add or deduct to each persons takings can be realised.

I have attached the worksheet to further explain.

Can you help?