and then click on the goal name you wish to edit or delete
This will take you to the goal page where under Common tasks you can click on Edit goal details or Edit goal tasks and due date or Delete goal
If you click on Edit goal details you are than able to change the goal from public to private, change the name of the goal and the description. Then click on Update goal.
Please note that once you click on Delete goal there is no undo, deletion is permanent.
If you click on Edit tasks and due date you are able to amend each individual task and milestone date, the final goal due date and also delete an individual task by clicking on the trash can