SAP questions

1) 1) Can we do directly the backflush from the WM managed locations in sap? If so, what are the things needed like the config etc

2) 2) Can we have 2 pick slips generated for the WIP and FERT goods in one outbound delivery for the STO process and to the customer ?

3) 3) What are the steps involved for generating the pick slips for both WIP and fert goods in the outbound delivery?