Hi. Thanks for this, however I'm not sure its quite what I'm after.
I want to remove the installers from the list completely, what you have suggested seems to leave them in but just give me a 0 value in measures.
I want to show my data like this
Installer Measures A 10 B 20 E 15 F 12
So I need to apply the expression you have suggested in here, is this possible?