I'm not quite sure how to proceed from here, because I don't read any of that in the rules. The rules say that members of Parliament may participate at committee. They may not vote, they may not be counted for quorum and they may not move motions, but every member of Parliament has the opportunity to participate at committee. There is no requirement for unanimous consent for a member to participate in a public hearing.
The ability to move a point of order belongs to every member of Parliament by virtue of them being a member of Parliament. It's our collective responsibility to make sure this place works, so any member of Parliament may raise a point of order to ensure that committees are being run according to the rules. That is what we are attempting to do here today.