Creating a new Item via a Poly Item
When a Related Item uses a Poly Item as its source, a user will see
an additional dialog when creating a new Related Item. When creating
a new Related, you must first select which of the Poly Source types you
wish to create. For example, if you are creating a new Deliverable for
a specific line item in Project, here is the first dialog that would display:
Select the Type of Item, and the rest of the process of Item creation should be familiar.