Why isn't Model specified in the Field Properties view?

To locate the model for the field ‘INTO Location’
RackMultipart20170522-122108-14n572p-Screen_Shot_2017-05-22_at_13.01.33_inline


select the field editor (click in field editor header)
rackmultipart20170522-63928-oh7pqj-screen_shot_2017-05-22_at_13.02.29_inline


this will display the model as shown above

Paul