You need to set the "remove amount" and the "stepover" in the profile dialog to do what you are asking.. Then set the depth to full cut .I have a 3" end mill and would like to do this in steps going towards the part (y direction) the full value of 2" depth
If need be, you can post your sample file here. And we can have a look. And send it back with the values filled in for you to look over.