To do that you first create each options text and store them as a building blocks. Then you add a building block gallery content control and point it at the relevant category. The Maxey link that goes into all the gory detail is
http://gregmaxey.com/word_tip_pages/..._autotext.html
It really isn't as complicated as that whole article appears since it includes a huge amount of background info and code samples. If it gets overwhelming, just read the sections
Creating New Building Blocks and
Building Block type content control