Post this is webdynpro forum.
1)Create an assistance Class.
2) Create separate methods for create / change and delete.
3) In Webdynpro component, assign this assistance class.
4) In the view, create buttons for changing and deletion. In button properties, assign an action. Corresponding an event handler method will be created.
5) On onaction_xxx method. You need to write the code. Basically calling those assistance class methods .