Each contestant is limited to competing in one individual/team event and one chapter event. For prize eligibility, each contestant must compete in all aspects of an event. If a contestant is unable to complete an event, they may submit a substitute performance or leave the competition entirely. The number of events you can do depends on how much time you have to practice. If you have only a few hours a week, then you should focus on learning as many events as possible so you don't miss out on any opportunities. It's also important to note that there are restrictions on what type of events you can do. For example, you can't be part of a team for a balance beam event and also need to take care not to compete with yourself (i.e., no self-contests). The same rules apply when selecting your division: for example, you can't choose artistic gymnastics while another athlete is selected in your place. These rules are often communicated by national organizations to help ensure that everyone has an equal chance of winning prizes. In conclusion, the more events you know, the better your score will be. This will give you a better opportunity of winning prizes and advancing in the world championship.