I recently purchased the GPP Hypertrophy bias and needed a quick clarification if possible. The template calls for 6@6, 6@7, and 6@8 x 3 sets for the main lifts. My question is do you warm up and do sets of 6 all the way up to something that feels like a RPE 6, or warm up to a heavy single that determines the workload for the RPE 6 set?
Thank you
Yes, do sets of 6 all the way up 
I have a question in regard to the above answer. Do you recommend warming up with sets of 6 (or whatever the program calls for that day, for that lift) all the way up until you hit the desired RPE? Or, can you warm up and slowly taper down the reps until you are ready to do a full set of 6 for the desired RPE based on your RPE from last week. And then adjust accordingly based on how that set felt.
Example: Last week I did a Comp Bench set of 5 @ RPE 8 #225. This week, should I warm up with 5s all the way to #225. Or, warm up and save my strength to do my 3 sets of 5 @8 #225? And adjust the weight up or down depending on how the first set felt?
Yes- that’s it precisely.