Online means that you will follow the full course from your own location via videochat. There are only a few lessons online, most courses are taught at our location.
Offline/hybrid means that you follow the course in the classroom and that you will participate online from your own location only when necessary. If you travel abroad for a week, this is possible. Joining hybrid is not ideal, for you, the teacher and students it takes more effort and due to connectivity problems it you might be missing out on some parts. Always try to be in the classroom when your course is an offline course.
When filling in an application form, you may state your preference for online or offline/hybrid classes.