I guess you referring to PE and PE+1.
So PE says “Using the PE do 5 sets of 4 reps (per side if appropriate)
Take a full 3 min sitting recovery between these sets.”
– Enough weight and intensity to make 6 reps desperate.
– With that weight and intensity I will do 4 Reps of Tool Rows with 5s lockoffs at top per side —->3 min rest —-> repeat.
ARCing I do in old heavy ice boots but just use hands. Keeps my fingers in shape and the same forearm conditioning I feel. Really its just get on a very easy wall and go for 10- 20 min. I use it as a warmup (5-10min) and do it as a separate workout (20-30 min). You could do it on a hang board too with foot assist. Intensity is 4/10 or something easy. Supposed to be easy not pumping out. Uphill athlete has a several articles on ARCing in their climbing if you look that their climbing articles.