Is there a help file for how to use this software?
No, there is no tutorial available for ChargeMaster. I've downloaded the installation package from its official website and continued with the install procedure. After launching the software I managed to access a Help section from the Help button. That is the only thing related to Help and tutorials.
However, if you're feeling lucky, contact the developers of the application through the following link: http://www.skyrc.com/index.php?route=information/companyinfo