Edit an action

This window is shown when you're adding or editing an action.

Choose an action

Choose the action in the list on the left hand side of the window.
Actions are sorted in categories.

Set up the parameters

When an action is chosen, its name and a description are displayed on the right, along with the parameters that must be completed for using the action.
For each parameter, you can click on the button at the right of the parameter field so as to open an editor. For example, if the parameter is an expression, the button will open an expression editor.

You can find a list of some paramaters here.