We have been inserting the conduits in the walls and other pipework! The electrics data and along with other pipes like compressed air, vacuum and water & waste.
It is a fiddly work, routing the various lengths of plastic conduits up into the ceiling space for lighting circuits, smaller conduits for data cables and connecting compressed air to both sides of the garage and into the garden room too!
but all this has to be done first before we can put up the base 18mm OSB boards.