Requirment for Material Variant

Hi all

I have  Client Requirment  as below

For My Material Variant Created with Refernce to  Configurable Material, the BOM should not get exploded it should explode at Single Level, and Requirments need not  get Transferred down the Level , is there any customisation settings for the same, if any body has some ideas Please share.

for Example I have Material Variant - CAR_MV  and configurable Material- CAR_CM

and in my BOM of CAR_CM I have two components i.e  CAR_ASSEMBLY & CAR_ACCESORY.

Requirment is when I Create Sale Order for Material Variant CAR_MV  the configuration needs to get copied from configurable Material-CAR_CM  and only BOM should explode up to Single Level. say up to CAR_CM

It should not explode components

CAR_ASSEMBLY & CAR_ACCESORY. 

Thanks & Regards

Sandeep