The mandatory COVID-19 health and safety measures depend on the type of activity and the country or region.
Your activity provider will inform you about the local regulations. To contact the provider beforehand, just send them a message via the messaging tool or call them directly.
In any case, please stick to general COVID-19 health measures, such as washing your hands regularly and keeping a distance from other people.
For more information, refer to the WHO's COVID-19 advice or other reliable sources.