[9.6] SRC Bundle Options

Good Afternoon!

Please give me a pointer on where to look.

I want to create a Bundle of several items (One Mandatory the rest optional).
The main catalog item in the bundle will have the mandatory questions to the user.
The answer of those questions will determine whether any or all of the rest of the catalog items in the bundle will come into play>

I hope that I have explained this clearly

Thank You,