Preferences for Robot Through SmartDashboard

[King Nerd III]

Hello,
My team is doing an offseason project and I've been playing around with the ability to set preferences for the robot through the SmartDashboard question. I haven't figured out a best place to retrieve those values yet (we use the Command Based robot, just incase that helps) and I was wondering if I could have multiple preference objects, probably one in each file we need a value. Is this something that will work? If so, will that mean that each time I create a preference object I need to have a different preferences window in the SmartDashboard?
Thanks,
Isaac