Your original macro for ANDY is inserted into cell D3, and the formula is already referencing that particular row, but with column-offset referencing style.
To change it for MARIE, just simply change
Range("D3").Select to Range("D4").Select
Range("O3").Select to Range("O4").Select
Selection.AutoFill Destination:=Range("D3:N3"), Type:=xlFillDefault to Selection.AutoFill Destination:=Range("D4:N4"), Type:=xlFillDefault.
Though it may not be the best way to do it.
You can also just insert the formulas directly for the entire range of cells:
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