This study is testing a new medicine called semaglutide for kids and teens with type 2 diabetes. Type 2 diabetes is when the body doesn't use insulin properly, leading to high blood sugar. Semaglutide will be compared to a dummy medicine, also known as a placebo, to see if it works and is safe. Participants will take one tablet each morning before eating. The study lasts about 1 year and 3 months, with 12 clinic visits and 8 phone calls. Participants need their parents' permission to join and must be between 10 to 17 years old. During clinic visits, blood samples will be taken, and some questions will be asked.

• The study lasts for about 66 weeks with 12 clinic visits and 8 phone calls.
• Participants take one tablet each morning on an empty stomach and wait 30 minutes before eating.
• Participants must be aged 10 to below 18 and already on diabetes treatment like metformin or insulin.