Additional sorting options in Mini Frontpage Pro?

Hello! I'm using mini frontpage Pro to display a yearbook-like category page. The article titles are all people's names, so I've created a custom field with the last name in hopes I'll be able to sort using the last names via the custom field, rather than the article title. Another option that could work is using the article order in the category to sort, since that can be customized in the back-end. Is either of these options possible in the extension for sorting? The site is still under development, so I am in the process of evaluating extensions for the final use. Thank you!

Yes, it's currently sorted by title. This won't work because it's sorting by the person's first name instead of the last name.