The simplest way to configure prompts is to access the cabinet from your computer's browser using the IP address, followed by :5000. Eg. 192.168.0.3:5000. You can then use your computer's keyboard to key in the wording for the prompts. Click here to read an article on how to access the menu from your desktop.
Note that the List of Keys starts with No first, then Yes. This is so that the first button presented to the user is No, as this is most likely going to be the case for the majority of Check In's.