In Doctype editor you can design or customise form view of your Doctype.
- On "Create New Doctype" option, after entering the "Doctype Name" you will be landed to Doctype Editor
Left-side panel of the Doctype editor, contains Fields with different types, you can Drag-and-drop suitable field to the editable area.
Note: Fields can be added only into sections or columns.
Go to Doctype list view of the Doctype which you wish to edit
And click on "Customize <Doctype>" Button on Action Bar.