Hi! We actually just had the same issue and it took me calling Lacerte to get to someone who was able to help.  Here's what we did.

First, check to see what client letter template you are using: Settings, option, setup.  The default letter folder is the item you need to take note of.  (Ours says 1)

Then, you need to adjust something on the actual client letter settings.
1. Settings, client letter, select the tab that matches what your "default letter folder" says
2. Expand the "main letter body" section under the standard folder
3. Select the Federal Electronic Payment EF Only Option
4. It should say "The balance due will be directly withdrawn from your bank account on [FDDO]." 
***We had to add the O, then it worked!

Hopefully this is what you all were looking for!