If you drag the table calculation field from the view and drop it in the left data pane, you'll get a calculated field with code that you can customize.
Hope that helps!
Thanks. I see that. So in case I wanted to create a parameter under that formula can I do it within there (like we had in 9.0/9.1) or should I go and click on the create parameter on the drop down next to the dimension ?
Example :- The below is the formula and the Moving Avg Month Input is the parameter.
WINDOW_AVG(SUM([Sales]), -1, -1)
WINDOW_AVG(SUM([Sales]), -[Moving Avg Month Input], -1)
That should work.