A new field can be added to a project in INPUT or in DATA DESIGN>Project Database. It is easier to add a new field in INPUT but there are more options available in DATA DESIGN.
Data Templates can be modified in DATA DESIGN only.
Once a field has data it can only be modified in DATA DESIGN.
Deleting a field can only be done in DATA DESIGN.
This one demonstrates adding a field in INPUT: .
This one shows how to add a new field, add a caption, and delete a field in DATA DESIGN: .