Distribution Order Template Remarks Field

The Remarks field on the Distribution Order template is a text field in eB Director and therefore limits the number of possible characters.  One of our projects wants to use this field as a disclaimer and it would be better if the field was a "memo" field.  I have noticed in eB Web that I can set my own remarks and the field in a memo field.

However, we only want to apply this to one DO template (we have many). Is there any setting that can be changed via Director, the Layout Editor or elsewhere for this Default Property to allow more characters?