Thanks.
By changing the custom properties of the shape (changing fields to blank) I discovered you can allow the choice from any manufacturer with in a category or even any category...not a list of specific components though... You still need to select category and manufacturer. Takes away some of the features advantage but I need that flexibility.
What would be handy is if in custom properties you could have multiple fields of Manufacturer with different values, so that when that shape is dragged into the project you have only a select few Manufacturers. This would be more useful if you applied the same theory to the Model... so it brings up a selection of a specified components.
To clarify, you have a shape for a Receiver but when you drag that in to your project you only want both Denon and Sony as options but you dont want all the other compnents with in those manufacturers like CD or DVD players.