Usually you would draw the profile for what you want and before you even start you probably know what stock size you will use.
For the rough cut try taking a rather large depth of cut, say .125", see what kind of pathing you get with the tool you have selected.
then reduce the cut in half, then in half again, this way you will quickly see a workable path generation and remaining material to be removed. Very easy to redo.
The idea of the rough is to remove as much material as possible , then refine it with a rough finish and finaly a finishing cut.
Doing the example will give you a flavor of tool use. Not much difference then if you were doing it manualy on the tool side.
RICH