Our yard occupies an entire small former bedroom and consists of 7 concentric reverse loops. There are six sidings plus the main. On the inbound leg, the tortoise wiring is straight forward as each siding connects directly with the main. However, on the outbound leg, four sidings converge into two, the resulting two converge, and that track is joined by each of the remaining two sidings before rejoining the main. My plan is to be able to engage each siding with just a single toggle switch. In other words, with just a single toggle the appropriate (multiple) tortoises will be set. I have a design, but it's complicated. I'm thinking some of you must have done something similar and hopefully simpler. Thanks in advance for any and all advice.