this is not supported by web assist software.
you would need to hand code this fictionality.
i did a quick google search and this was the first result:
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.