Welcome to the PolyU Online Student Services (POSS). POSS is an integrated platform managed by Student Affairs Office (SAO). Through POSS, you can : sign up for co-curricular activities. check details of Extra-Curricular Enrichment for Lifelong Learners (EXCELL) courses and register for them make APPOINTMENT for career development, counseling and student advising. book AMENITIES, SPORTS FACILITIES. apply for student LOCKERS*. ( * Students will be re-directed to the existing systems temporarily until the full launch of POSS. ) To help us enhance POSS, please share with us your views and comments via email@example.com.