Hi Guys

I want to understand a concept. I have 4 custom objects.

1.  Position
2.  Candidate
3.  Job_Application
4.  Review

The Job_Application object has two master-detail relationships. One is related to Position and the other is related to Candidate. Now if I want to create another master-detail relationship in the Job_Application object. Framework will not allow me to do that, because we have limit of two master-detail relationships per object.

I'm trying to create a master-detail relationship in the Review object with the master Job_Application and the detail Review object. But when I choose master-detail relationship type and go to the next page to relate it with an object(master). I do not find Job_Application object in that related to list. Why? Is it possible to create a master-detail relationship with such an object which is already detail of two objects? It could be the master of another object? I think it should be possible but don't know what is the reason behind that I'm unable to see the Job_Application object in related to list. Please guide.

Thanks.