How to model Multiple level BOM in SAP CTM

Hi Gurus,

I have a 2 PDS as follows

1. FG1--> PFG1

2. PFG1- COMP1

Now if i were to do only material constraint planning using CTM ( assume infinite capacity), what settings do i need to make in Master selection of CTM planning scope so that i constrain the FG1 demand based on the supply availability of COMP1.

Specifically what options do i need to check

1. Select dependent demand automatically

2. Start also for specified Source Of Supply

3. Perform only single level selection

Also what all do i need to include in Location product selection and In -House production selection?

If Demand on FG 1 is 100 , but COMP1 has only 50 units, i want FG1 and PFG1 to be planned with 50 units ( assume 1:1:1 ratio)

Thank you ,

Sai