Now click on the + sign and add the fields to the screen. The screen is like excel has rows and columns. See the following screen.
Once the field is added to the view you can click on Alt + filed that will give you the config of each field. You can change the lable or make the field mandatory.
Make sure you save at the end of the process. See the screen shot.
I hope the above info gives you some idea of what to do with how to do with the new screen.
I have some related information as follows.
Just browse thru the ablve links that will give you some idea.