We try to make sure our BR closer does manuals for core departments, especially before a truck. Depending on how many POGs are in the system/price change workload, they can typically pull Chem/HBA/Pharm/PAPR. Grocery if they're lucky. That way open stock gets purged from the back and casepacks from the truck can go directly to the backroom...works especially well if you're not a push all store.
Before a FDC truck we try to do manuals in Dairy/Freezer/Deli. Manuals for Pro don't work out too well since the triggers/capacities for fresh produce are always screwed up. Same thing with BAKE/MTCL/MTFZ
The manuals are treated like autofill. Casepacks are bowled out with the truck and you have your first wave of pushers start on the autofill. Some stores have 1 person dedicated just to pushing open stock. They push the autofill as well when it comes out...typically it'll take one person about 3 hours to push openstock.
It's a good system that gets more product to the floor. Honestly, I think a good chunk of Targets In-Stocks issues could be solved with having more time dedicated towards manual cafs/purging the backroom. It resets a lot of processes....gets BRTM's to interact with locations that might not have been touched in months...finding ghosts/baffles. If your pushers are good, it allows them to push product that might not get pushed often, finding zoning errors. Getting product out of the backroom makes the In-Stocks workload easier as well. It gets product moving, and when product moves, things get fixed.