I’m not sure what’s not clear here. With an MSO only one state at a time
can be active. Shameless self-promotion follows. I have a course on
lynda.com that deals exclusively with multi state objects:
http://www.lynda.com/InDesign-tutorials/Developing-Multistate-Objects-InDesign/197346-2.html
If you don’t have a subscription, this link will get you a 10-day trial:
http://lynda.com/trial/boblevine