You can also use named captures %s and use the names in the 'Set' action %s (e.g. Regexp: %s, Set action: %s). A matched EMAILADDRESS has the name '%s'.
You can start a connection between two Activities by dropping the Transition element over the Start Activity of the connection. After that you can move the loose end of the arrow to the End Activity.
This is an overview of all settings which will be part of the deployment if you start it now. You can compare each setting to its former state by clicking the icon on the top right.