Thought I would offer a quick update. I was adding my accounts to the accounts.csv file to make managing easier and noticed a field for 'account number' distinct from username. In this field you can add the primary/sub account details. Once I did this Zorro was able to recognize the margin in each one. Note you need Zorro S license applied or Zorro wont read this file.

On my second issue of running Zorro twice from the same install. I did various test and best I can say is I've seen it work normally sometimes and other times display behavior I find wrong. Will try to find a pattern.