How do I create a Custom Entity under a Custom Entity?

Hi All,

I am trying to create a second Custom Entity(PHASE) under a newly created Custom Entity(SITE) using the Custom Entity Wizard for CRM 7.2.

Unfortunately I am unable to do this.

When I create the entity "PHASE", it gets created at the same level as the first custom entity "SITE". I would like to see a tab of the entity "PHASE" under the fist entity "SITE" along with everything else it has to offer at that level.

Please let me know how this can be done.

Thanks
Satheejan