Citizen's Parliament Spaces

The spaces used for the Citizen's Parliament will be inside the holes left in the megastructure. Some options I have for these spaces:

1. Fill in some holes as needed with a permanent Citizen's Parliament space. These spaces could still be removed later and new spaces added in if the structure of the government changed for some reason. The spaces would be very rapidly flexible to cater for the different ways the citizen parliamentarians will use them.
2. Rooms appear when needed. Perhaps stored in the megastructure and come out when the space is needed. This would need a lot of infrastructure for a space that is probably not used often enough to justify it.
3. The spaces are permanent but are moved around the megastructure where needed. Again this is a LOT of infrastructure for the amount of use it gets. The existing houses in parliament are almost 50m x 50m, it would take a lot to move this around.
4. Spaces are built with a kit of parts as needed. This would require a lot of manpower and would most likely just not be used as it would be too much effort.

Of the above options, the first is most feasible. The Citizen's Parliament is only used for 5 days every 3 months, therefore the spaces need to require a minimum amount of infrastructure and be very quick and to configure and not require much effort from the users to configure.