The app itself is pretty simple and straightforward, however the way they add the plugin (you have to launch the WebEx Settings app and login to a webex site, and THEN it adds the plugin) is goofy and I could not get the sequencer to pick it up to save my life. The solution is fairly simple.
Windows Registry Editor Version 5.00[HKEY_CURRENT_USER\Software\Microsoft\Office\Outlook\Addins\WebExOI.Addin]"CommandLineSafe"=dword:00000000"Description"="ATLCOM Outlook Addin""FriendlyName"="WebEx Productivity Tools""LoadBehavior"=dword:00000003
Import that into the sequence (I used Kalles awesome AVE) and tada, should work fine when suited with Office 2010.