Whoever wishes to withdraw from courses must meet the following qualifications:

Undergraduate freshmen, sophomores, and juniors:
No less than 16 credits. (Foreign students admitted under the Policy of Foreign Student Admission shall enroll in at least 12 credits.)

Undergraduate seniors:
No less than 9 credits

Undergraduate deferring study (student status shows “deferred graduation”):
Enrolled in at least one course. 

Postgraduate:
No less than 3 credits

For detailed operation methods, please refer to the video description on the website of the Office of Academic Affairs :
https://oaa.ntut.edu.tw/p/412-1008-13414.php?Lang=en