# Registration and Participation TOs may require minimal information from players for registration in events, such as a player’s name. Typically, the player's Omnidex account should be used when registering a player for an event hosted through [Omnidex](https://omni.gatcg.com/). If a player does not have an account, they should be encouraged to create one. Players must be willing and able to provide the identifying information to participate in a tournament. TOs should announce/publish deadlines for tournament registration and players are expected to be aware of the deadlines to arrive on time for registration. Tournament participation as a player is open to any persons over 13 years of age or with the approval/permission of their legal guardian/parent. People may be restricted from entry if prohibited by federal/state/local laws, rules enforced by the TO, or by management of a tournament venue. Tournament organizers may assist players in the application process. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://trg.gatcg.com/general-structure/registration-and-participation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.