I think a committee of the whole would perhaps be a useful model to look at, and then using that as your template, as you drill down into decisions about what you really want the parallel chamber to do, then you can start and say, “Okay, there are rules here.” You can select. There are some jurisdictions that have another way of handling business that you might think would be useful. This is an opportunity for you to be experimental.
I would suggest to you as one possibility that if you didn't allow votes in the parallel chamber because you really wanted to promote debate, the opportunity to be flexible about whether or not you think the government has to have control may be less of a factor.