nxqddb defaults the entry widths to a length of 30 characters. There are two ways to change an entry's width:
<Ctrl-3>
clicking(hold the ctrl key while clicking)
the mouse on the text entry's label. Doing so will display a window
for you to set various options -- one of which is to reset the length of the field.
For details on this individual field configuration, see section 5.1.