Another CP-user who wants to run the marathon without training ???
It is a little bit more complicated than you 'assumed'. I already offered you a link to my blog post about events that are able to trigger (advanced) actions. Here is a link to an article with tips about using widgets.:
Using Captivate Widgets? Some tips - Captivate blog
I have a explanatory table for widgets, that I offered publicly. I have another one that includes interactions as well, but did not publish it.