Unit 
                                                
                                                
                                                    
Details the following:
 Code
Code
                                                    Unique value, such as NAS01, that must not exceed the maximum length of the corresponding field in an integrated system, such as a student management system.
After saving, the value cannot be edited.
 Description
Description
                                                    Description that is used to select the 

                                                            
Values are defined in the reference data 
 Scheme
Scheme
                                                    
                                                            
Values are defined in the reference data Scheme.
 Staff member
Staff member
                                                    Staff member that teaches the 
 External reference
External reference
                                                    Code that defines the subject description of the 
 Allow repeats
Allow repeats
                                                    If  selected, the