Changing CSE formula and changing Vlookup to Index Match

Hi,

I heard that I can speed up my workbook by getting rid of any CSE array formulas and even changing the Vlookups to Index Match. I managed to take care of the Vlookups in Yellow and now I'm just having trouble figuring out just one Array formula highlighted in Blue. Please see attached.

This calculation page is re-calculated hundreds of times in a loop so any speed increase is helpful.


thanks