I built this module years ago and recently discovered it had no post. I think the panel was sourced from Bridechamber. It is a typical MOTM format quad multiple with arrows indicating the switching jack. With no cable plugged into the upper right jack of each multiple, then the signal would be passed from the multiple above. I added switches between each 4-jack multiple to make the connection manually controlled. This allows for example an 8-jack multiple, rather than a 7-jack. Thus it can be configured as four 4-jack multiples, two 8-jack multiples, or one 4-jack and one 12-jack, or even one 16-jack multiple.
Also, I added a white banana jack in the center of each cluster of four jacks, which is always a part of the multiple. This allows a signal incoming from a banana module to be routed to up to four destinations per multiple.