If a class is closed, the Instructor is the person to determine if additional students can be added to the class by asking the professor or department for a special permission number. You must contact the professor directly by email. Please keep in mind that asking for a special permission number is NOT a guarantee that you will receive one. You can look up their information using the Rutgers directory: https://search.rutgers.edu/people.html
If it does not appear there, search for the department’s website, and contact the administrative assistant.
Special permission numbers are unique to a particular course section, can only be used once, and cannot be shared among students.