This movement follows the general principles of the rover table movement, by having the basic movement with one or more appendix tables sharing with different tables on different rounds. There are unfortunately several restrictions on this movement.
The number of tables in the base must be divisible by 4. The base movement is set up as a share and relaySWITCH Mitchell (switching the last 1/3 of the rounds usually being adequate). With N tables the number in the base, then up to N/2 rover tables can be accommodated. It is normal for the first rover table to share with table N-1 and then move down two tables at a time until sharing with table N/2+1. After this they share with table N/2 and they again move down two tables at a time so that they traverse the same circuit again.
For example:
4 tables: 3, 2, 3, 2
8 tables: 7, 5, 4, 2, 7, 5, 4, 2
12 tables: 11, 9, 7, 6, 4, 2, 11, 9, 7, 6, 4, 2
Second and subsequent rovers share on the first round with any one of the other tables in the circuit and then proceed twice around the circuit in the same order as given above. On the second encounter of the tables the rover table pairs exchange roles, thus in the same instance performing a switch.
