Routing --> How to define man and machine ?

Dear Nav Users,

I have the following production scenario.

Raw material C is first processed in Machine 1 which is operated by operator 1 (Total cycle time for machine 1 which is operated by operator 1 is 2 hours). Then the output of machine 1 is taken in to Machine 2 which is operated by operator 2 (Total cycle time of machine 2 operated by operator 2 is 3 hours). How to define this in the routing lines ? with machine 1 in first line / operator 1 in the second line / machine 2 in the third line / operator 2 in the fourth line.

In the above case what will be the run time of each line ? how to divide the cycle time between the machine and operator ? because Machine 1 and operator 1 are parallel where as machine 1 - operator 1 and machine 2 - operator 2 combination is seriel.

In the above scenario the cost of machine 1 and operator 1 is different.

I wish to handle the above scenario only with work centers and not with machine centres.

Can any one tell me how to define this scenario in routing ?

Line 1 : Machine 1 2 hours
Line 2 : Operator 1 ??

Line 3 : Machine 2 3 hours
Line 4 : Operator 2 ??

Regards,
Venkatesh