If I have say below values in first dropdown of casscading:
A
B
C
and for A we have second dropdown which says, X & Y
for B we have second dropdown which says, P & Q
and for Cwe have second dropdown which says, M & N
If I want to keep the field non mandatory but make the second dropdown mandatory only if option B is selected in the first one, any way I can do it?
I am in Data centre.