How can I increase my chance of enrolling in case the course has multiple sections?

If a course has no vacancy yet but there are multiple sections, students may submit add requests to waitlist for different sections at the same time. However, when vacancies arise and should one of the waitlist requests be successfully executed, all other waitlist requests for the same course will be cancelled. The below is an illustration:

L1	Status: Add Class Full → Waitlist	When vacancies arise in L1→	L1	Status: Enrolled
L2	Status: Add Class Full → Waitlist		L2	Status: Waitlist Request Cancelled
L3	Status: Add Class Full → Waitlist		L3	Status: Waitlist Request Cancelled