Before organizing a high-level event, the contracting party must provide a briefing of the event, detailing the public, objectives, expected date, and place. The briefing will support the organization as expected by the client.
Source: CESAE (2018). Cómo organizar un evento: ideas, fases y recomendaciones para tener éxito. Access: https://www.cesae.es/blog/como-organizar-un-evento-ideas-fases-y-recomendaciones-para-tener-exito