hallo there.

well this is the problem i made a matrix a really big matrix so in order to find information thats in the matrix whit oud having to look in it or use the filter option i a few dropdown list thats before showing any informatie you first nead to select soemthign in the first list then the second ect.
once filled it in behind the list there should come some information oud bud it doenst mainly because well its hard to explain so ill put a example down here:

Map1.xlsx

i think there two options

option 1 is when there is no follow up information the list show "0" and the emty spots in the matrix are filled up whit "0"

option 2 is make a the formula in Q3 work probely