A Assembly (Bundle) is a grouping of Products and/or Product Groups that allows you to add a single object to the diagram but capture information about multiple products at once.
Example - A Chain Link corner post contains a number of different individual components (products). By creating a Corner Post bundle, you can drop on the canvas a single symbol (we call them shapes) and the app knows to provide details on a series of products.
1 3/8" Rail End
2 3/8" Brace Band
2 3/8" Tension Band
Caps (This could be a Product Group so that you can pick the appropriate Cap type)
Post (This could be a Product Group so that you can pick the appropriate Post type)
5/16" x 1 1/4" Carriage Bolts
5/8" x 60" Tension Bars
Concrete ( 60 Lb bag)