When building Busby workflows you can drag Busby workflow tools into the workflow canvas, then link them together to produce the results that you require.
Detailed notes on the configuration editor can be found here
The workflow tools fall into five groups. These are listed below in the order that they appear in the configuration editor. The links take you to a description for each indivisual tools, giving an outline of what the tool does, some typical uses and an overview of how the tool works.