assembly with external reference

I build an assembly and use design table in each differentpart.

I use extrude "up to surface" for part 1 to part 2 and I want tobreak the link ( If I change a dimension to the part 2 , I don'twant the part 1 change)
But, with design table using, if a break or lock externalreference, it break (or lock) each configuration with the sameexternal reference

I want to break or lock the part one by one

Is it possible?SolidworksAssemblies