Just in case you haven't found an answer yet, can you contact your Esprit rep and ask them for a post? If you don't have a maintenance agreement with them, though, they may not help you. Anyway, the posts can be edited in a word processor including Notepad. Find a post that is close to what you want and make edits to suit your requirements. Save it as, for instance, test. Run your code using this modified post and see if what you changed works. I have yet to see a perfect post, but you can get really close.
We run Esprit and the shop has at least 8 Okuma lathes, several have dual slides.