If you are asked to assist an officer performing an arrest you must:

When assisting an officer performing an arrest, the primary responsibility is to provide support and aid to ensure the arrest is carried out safely and effectively. This can involve a variety of actions such as helping to control the situation, providing backup in case of resistance, or assisting in the handling of evidence or detainee safety. Each of these actions is critical to maintaining order and ensuring that the arrest is carried out in accordance with the law, respecting the rights of both the officer and the individual being arrested.

In the context of the situation, running for help or calling for help might suggest that you are not equipped to assist, which can lead to delay and potentially escalate the situation. Recording the incident, while important for documentation, does not provide immediate support in the moment of an arrest. Therefore, the most appropriate action when asked to assist is to actively engage and help the officer with the arrest itself.