So, if another sub system on that chart triggers a trade while you are already in one on that chart, do you suggest that we ignore that second trigger and wait  for possibly a second, and perhaps a third position, or an exit on the sub system  on which you entered the trade?

If a sub system on another chart triggers a trade while you are already in a trade from another chart, what are your thoughts about what one should do then, since we MAY have to commit all the capital set aside for a  SPY Pro trade to the existing trade?

Certainly not rocket science, but confusing without an up-to-date trading plan.