An Admissions Officer is an individual working, usually within an educational institution, and is tasked with evaluating and admission of students into the university, school, college.
They may also work with other employees to decide on student admissions and the processes involved and will certainly need to help enroll students with the process, the payment, the paperwork, and any information they need to know or any questions of theirs that may need answering. They may participate in the admission process modification and the creation of marketing content and guides, and other documents used in the admissions process.
The attributes required by educational institutions of the person hoping to work as an Admissions Officer can vary a lot. Generally, though, the individual should have a Bachelor's degree and preferably past work experience somehow related to this position. However, additional experience may be sufficient to replace the diploma.