Learners might find that the structured program they have in the class is not adequate for them; thus, self-study is a smart way of getting support to develop language competence. Other learners might see self-study as an alternative learning strategy when studying solitarily is suitable for them.
For English language learners who do not go to any class (in this case YARSI University lecturers and YARSI students who is not joining any program), self-study in the SAC is a perfect choice.