Help with BOMlist

Hello

iam new to this forum

I would like to make a cutting table where the lengths in front of the parts to be cut of a assembly.

now is not a problem that in quantity only one welded part in an assembly state but if I have several of need

he does not count on it together

Because then in (see picture) Quantity must be 3 "Koker 60 * 60 * 3" . except 1

could someone help me to get the right numbers

At the top table, I would like to show the total required lengths but like the other problem is that each "Part" i.p.v total

It is both i a assembly so i dont have to do this part by part

Who can help me please

SolidworksBill Of Materials