We can write the report on Index-Operator class and pass the workbaset as parameter to get the lost of opertaors associated with that workbasket. As you need email address of the operator, you can can do the class join with Data-Admin-Operator-ID
Can you please show with a screen shot as you always do. Especially the class join with Data-Admin-Operator-ID. Also which class should this report be in so that the operators are available when an assignment moves from One Queue to another Queue or does it even matter.