HI,
ok then create all structure as for 1000 or copy all parameter to 1000 company code.
and logistic side create plant and storage location and master data as was for 1000 company code.
then you create project wbs network as was created for 1000 company code.
PS side below configuration you have to do.
MRP controller you have create by OMD0 transaction.
Network type parameter
network scheduling parameter
availability check parameter
even check below link if helpful
SAP Project System — All about SAP PS
Regards,
Sanjeev
