Mac OS X keeps preferences in Property List files or .plist files. For eCrisper, the file is com.eCrisper.plist located in ~/Library/Preferences. The ~ refers to your home folder therefore /Library/Preferences is a path starting from the home folder.
To access it, go in Finder, click on Go in the top menu (very top of the screen) then hold the Option key down. Library will magically appear as an option.
It is not enough to overwrite com.eCrisper.plist from another kiosk. To activate the new configuration you have to kill a process in Activity Monitor – the process is cfprefsd – select it and click on the X button top left to kill it (the user process, not the root one).