An idea to get you started:
In Col T of your Dashboard sheet (adjacent to your validation list in Col S) place the full names of the managers as they appear on Calc Sheet (eg KEATH, Gayle).
Use this formula anywhere on your Dashboard sheet to retrieve the data being used in Chart 1:
Drag it down as far as necessary
Drag those formulas over one column to right and you have the data for Chart 2.
Someone will likely improve on this by offering a non-volatile function (likely with an INDEX() option) but I'm doing this while watching football and it's all I can come up with.
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