: Start by defining what you want the user to accomplish with this new feature.
: Prioritize your list and literally draw a line between what is absolutely necessary for launch and what can be moved to later versions.
Applies the feature to the components that you select. If you add new components to the model and want the feature to affect them, SolidWorks Defining Scope and Determining Necessary Features
: Document any budget, time, or technical limitations that might affect development.
: Present your scope to the team to identify potential "land mines" and refine the timeline. Feature Scope in Assemblies - the SOLIDWORKS Web Help