Help:The material can't unfold by BOM in Manufacture

Hi guys,I am Chinese user and need help ,SOS :grinning:
I was built one BOM ,example:
LV1 BOM- AZ-10000-0000
LV2 BZ-20000-0000 (FOR LV 3)
C5-102-10000
LV3 BZ-30000-0000
BZ-4000-0000 (FOR LV4 )
D0-100-10001
LV4 BZ-40000-0000
D1-200-0000
D2-300-0000

BZ-40000-0000 is SMT for Supplier,but the materiel form us。
so then I want to built a work order to Manufacture ,and I will to Manufacture AZ-10000-0000 。in this time I found BOM unflod isn‘t I need。

IF I am not touch the Using multi-level bill of materials。
BZ-20000-0000
C5-102-10000

IF I am touch the Using multi-level bill of materials。
C5-102-10000
D0-100-10001
D1-200-0000
D2-300-0000
I hope the bom can unfold this。
LV1 BOM- AZ-10000-0000
LV2 BZ-20000-0000 (FOR LV 3)
C5-102-10000
LV3 BZ-30000-0000
BZ-4000-0000 (FOR LV4 )
D0-100-10001

thanks very much everyone