tutorial - how to add configurations in SW
if you want to make arrangements on part and then you want to create new versions, you can use this way to add configurations.
configutations>>(right click) defoult>>add derived configuration
now you can make changes on part
add new configuration
now you have 3 configurations.
you can make many changes on part and you can create new configurations
double click on configurations name and make changes..
Or you can use design tables. Much easier and faster... http://grabcad.com/questions/tutorial-how-do-you-use-solidworks-design-tables-to-create-parametric-smart-parts