You need to take advantage of the built-in Help for the application, since no other details are available on the Internet. The name of the developer doesn't help much as well since it's a very common word. I've looked for the Endog software and ended up with 0 results.
Therefore, go to Help > Contents or look in the installation directory for PDF or CHM files. Developers usually place these files to be accessible in case you need additional help.