Which of the following is NOT one of the important crime scene rules?

Establishing a temporary headquarters at the crime scene is not typically considered one of the important crime scene rules. The focus at a crime scene is primarily on securing the area and preserving evidence. Keeping a log of everyone present is crucial for accountability and to maintain the chain of custody, while refraining from touching anything helps to preserve the integrity of the scene. Protecting outdoor evidence from environmental factors is also essential to ensure that evidence remains undisturbed and unaffected by external elements. Therefore, option B does not align with standard protocols for managing a crime scene, which emphasize preservation and documentation over setting up a headquarters on-site.