What do you mean by "individual classes"?
On review of the website it seems like a prospective student would have to register for an entire program. My question is can someone only register for a specific class or 2, rather than enrolling in a degree program.
In many academic institutions it is matriculated (program/degree seeking) or non-matriculated, which would be someone taking or auditing a class or classes, rather than seeking to earn a degree or take a whole program worth of classes. Many that have degrees already simply wish to supplement learning or take classes for enjoyment, enhancement etc, rather than seek a college degree, as they have already earned that or don't wish to get a degree.
So is it possible to just register for a class online, as compared to entering into a full program?