On my web site I sell a package of scripts that I call "Digital publishing pack 1: scripts for Adobe DPS". These scripts take much of the pain out of using the Object States panel, and automates the creation of button-driven "reveal and hide" multi-state objects.
I just added a new script to the pack: this script allows you to add the selected object(s) to a selected multi-state object as a new state, with a single click. Without the script, you must copy your objects to the clipboard, select the multi-state object, select one of the states, duplicate the state, paste the objects into the state, and then delete the original objects from the state. Painful…but the script makes this painless.
If you frequently create multi-state objects for Digital Publishing Suite projects, these scripts are a "must-have". The package of 7 scripts is a bargain at $19.95/workstation. No knowledge of scripts required…full installation and use instructions are included.