prodcution order-operation doubt

Hi all,

My requirement is: suppose my production order is of 2 quantities. It has 4 operations 0010 to 0040. Client says due to capacity not available, client wants to perform operation 0010 and 0020 in house and then 0030 and 0040 form external vendor.

scenario is other way round also. operation 0010 and 0020 they want to send it outside. when GR is done then client wants to do rest of operations 0030 and 0040 in house.

Please reply

Regards.