Spent the evening building a process which loads AC into a broader structure, so that I can have an 'AC module' - finally got it working.
Not sure if I approached it in the best way, so posting here for more experienced AC veterans, and just in cas…
Thanks for a great response (and thank you for a great piece of software).
I think my installation of the Input System Integration had failed somewhere, likely due to human error. Your info helped me navigate my way through the system now working.…