When watching the example they sent, I wondered whether a pew was wide enough to have eight positions from side to side. I could imagine a view from behind like this of eight people in eight pews, each tracing the line of a bell by moving side to side. From the back, the heads would cross as bells cross. Eight (or six) people could all sit in one pew and keep changing their order, but that would involve a lot of jostling. I also thought the heads all looked the same in their example. Perhaps the interweaving lines would show better if you chose ringers whose hair all looked different from the back or added a rainbow of hats to the mix.
Anyhow, I had fun trying to imagine ringing in pews. Greetings and best wishes to you!
Hat Morgan