Thanks Luke. Sorry me being stupid. The only thing that would be good (and I know this is pedantic 
) but when you allow the definition of more groups that you can change the order the appear. If you look at ours it is not logical (in production flow terms) to have the brite tank above the conditioners it should flow across and down. I think that can be resolved when you add the extra groups as if the brite tank was in a tertiary group it would appear below would it not as the conditions in secondary group appear below primary.
Cheers
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