There are a few courses on the schedule that begin mid-semester. The purpose of the courses is mainly for students who late drop a class.
If you would go below 12 credits for the semester by late dropping a course (part-time status), it could impact student aid. A mid-semester course could be added to remain in full-time status.
Talk with your adviser about the mid-semester courses that are offered.
The courses are added at the Registrar's office if you are avoiding part-time status.
If not all seats are filled in the mid-semester courses near the start date of the course, any student can add a mid-semester course using LionPATH.