Cursor progression DOWN, on an input subfile screen

[Robert Nesiba <bob@xxxxxxxxxxx>]

We have a _subfile_ with two input fields, an option field and an amount 
field.
We want the cursor to progress down to the next option field, not across 
to the amount field.
It would be just fine if the amount field would only position-to
when the user specifically uses the arrow keys to position to it.   
(Rarely used)
What is the simplest way to accomplish this?   Is there a DDS only 
keyword method?
(We prefer to not use a function key to toggle the amount field between 
input allowed and protected)

Thanks, Bob