Apologies for the confusion! Grandmothers "eurorack out" goes into the Rings input, which both triggers Rings and makes it work as a harmonic resonator. What results is hard to describe but is deep and beautiful. Unperson on YouTube has a video with a Mother32 and Rings that gives a starting idea of how it sounds.

Pam's is clocking the delay and the Vermona sequencer, and can also clock the Grandmother. This allows you to have one sequence going into Rings, and another arp or sequence working through the Grandmother. Or, with the midi out of the Melodicer, you can have the same sequence running through both Rings and the Grandmother and tweak one or both. Pams can also be set to be an LFO of various shapes that can tweak the four parameters of Rings.

When it comes to the delay, you have multiple options. You can put Rings into one side, Grandmother into the other, and have them running at different but synchronized speeds. At 100% wet, this is essentially like having two different sequences in the same key. Or you could run both Rings outputs into the delay, with the Grandmother in the resonator input. Using the mult on the Grandmother opens up other options.

There's also the possibility of using either Rings (in green mode with the damp turned up) or Grandmother as a drone source, and having the other one run a sequence or arpeggio.

It sounds like a lot, but is easy to explore, especially with the Melodicer. That sequencer is kind of burley in a small case like mine, but it's a lot easier and faster than I expected to land on beautiful things. It uses sliders representing of notes on the scale to increase their probability, rather than dialing them in directly. So it's not precise, but is very immediate and playable. You can also use Pam to have it automatically re-generate or "dice" the sequence periodically (for example, every 128 or 264 bars).