"Fill in" or "enter" the text fields

In the documentation file I am working on right now, I have to inform user about filling some optional and mandatory text fields.

Which verb better describes the "putting some text in the field" - "fill in" or "enter"? Here are two examples:

1. In the newly opened Add Currency window (see Picture 4) fill in Name and Short Name fields and put a check mark next to Default currency checkbox (if required).
2. In the newly opened Add Currency window (see Picture 4) enter Name and Short Name fields and put a check mark next to Default currency checkbox (if required).

Thanks in advance.

Either enter text into the fields

or

fill the text fields

entering is what you do to the text.

fill is what you do to the text field.

I think enter better describes "putting some text in the field" rather than using fill in.