Main Settings / General Settings / Student Form / Units Enrollments / Default status for new Unit enrollment
Here we define the default Unit status for a Student, when a Subject is enrolled to a Student.
Example
Setting -> Active -> Request for registration (Figure 1 , Figure 2 , Figure 3)
When you enroll the student in a course the unit status will return to the status you have set in the setting as shown below.
Figure 1
Figure 2
Figure 3