Bridge weight selection

On week 8 it says 1@ rpe8 then 3 @ rpe 8 x 2 sets

do i first find my 1rep rpe8 then work towards my 3 rep rpe 8 or use the same weight as my 1 rep rpe8 then use that for 3 rep for 2 sets.

First find your 1@8, then use the chart to estimate what 3@8 would be off that single.

Thank you this really clears everything up