Here is an Excel utility in which you type in your data and press a button to create a file that will be correctly formatted for the Data matrix interface.

This is an unsupported utility, I gave it to a user earlier in the year and they were able to save considerable amount of time. There is sample data in this Excel, the data file that it created and sample CAESAR II file created from it.

Try it out and let us know your feedback. I will keep the latest version of this utility at our support portal (https://smartsupport.intergraph.com)