In case if you need to change format or font or some displayed settings of fields in print form of documents you should open Administration - > Service Tools - > Print Form Templates.
There you should find a print form which you need to edit.
...
After making changes it cell's properties palette, close Properties, close template of print form.
In window with Print Form Templates push Complete :
And after this action, you may check changes by generating print form which template was edited.
Thank you for being a FirstBIT customer!