How do I create expandable text form fields on this form?

Situation: I am tasked to convert the above document designed in MS Word 2010 into a dynamic fillable pdf form.

Background:

1. I edited the MS Word document so that the sections that need to be fillable have text boxes.
2. I converted the Word document into a pdf document.
3. I am using Adobe Acrobat X Pro to 'Create PDF Form'
4. I formatted all the text font and font size to the Times Roman, size 12, per our facility requirements.
5. In Properties of these text fields, I checked Multi-line and Scroll long text.

Assessment:

1. I watched the video http://tv.adobe.com/watch/acrobat-x/creating-expanding-form-fields/ and still am having trouble with the next items.
2. When previewed, the text fields allow for several lines of text, the scroll bar appears, but when I click outside of the text field, no plus-sign appears.
3. I found and launched the LiveCycle Designer application that came with Acrobat X Pro and I have never used it before.

Recommendations:  I hope someone can guide me to completing this dynamic form by:

1. Recommending changes to the form so expanding form fields will work.
2. Recommend other resources to learn more about LiveCycle Designer.

Thanks,

MNez