Can I read it for you so that you understand where they are coming from?
It says:
There is no specific rule governing voluntary appearances by Members of the House of Commons before parliamentary committees. They may appear before a committee if they wish and have been invited.
That's the specific issue. If you call them “guests”, they are voluntary guests. They are voluntary MPs who have come.
So if you continue on with your point of order, then nobody will interrupt you. Okay? Thanks.