A half table can be treated as a full table in the Howell Movement so that each pair has a bye on one round. The usual procedure with this movement is to treat the stationary pair as the phantom pair so that all pairs sit out at the same table.
If the movement is already under way, a pair can be added at virtually any stage during the game by placing the pair at any table where there is not a stationary pair The pair currently sitting in that direction at the table is displaced. The last pair then remains stationary at that table and as pairs move to that position occupied by the extra pair they sit out for that round and proceed to the next round as though they have played at that table.
In the ¾ Howell the half table is not convenient as not all the players sit out and so the scores have to be factored up for the pairs sitting out.
