If you have a single colony Long Hive (Top Bar or Framed) with the entrance at one end, then keeping brood out of the combs is straightforward, and yet many beekeepers don't do this. 'This' being the insertion into the comb array of a close-fitting partition (so-called 'follower') board with the bottom two inches cut off. This board will effectively act as a queen excluder.
Where to place the board is a matter of judgement. Certainly, combs on the queenless side of the board will eventually be cleared of brood, but what happens to them afterwards depends on the colony and box size. With a relatively small colony in a large box, those combs will be simply be cleared and left as clean as a whistle. If the colony is large relative to the box size, then they will be used as stores combs and filled with honey.
Hope this helps