Depends. Theres an assistance template in the 5/3/1 book called the triumvirate wich us basically 3 assistance exercises pe main liftr lift. I usually do 1main lift, 1supplemental lift,2 assidtance. For instance for dwuatingMain lift: squatSupplemental lift: pause squatsAssistance lifts: ghr,rdl,slfl, abs(landmines,leg raise, sit ups) As a fight comes near ill drop alot of the volume, and sup work When in doubt di 3x10 on assistance. Its all laid out in the 5/3/1 book, even what assistance exercises are best.