A more thorough explanation:

A conjurator is a person who swears an oath with others, usually as part of a conspiracy or secret plan.

During the Salem Witch Trials, many accused witches were forced to name their conjurators, or those who had supposedly helped them practice witchcraft.

In ancient Rome, members of secret societies would often become conjurators, swearing oaths of loyalty and secrecy to one another.

These examples illustrate how a conjurator is someone who is part of a group or conspiracy, and who has sworn an oath of loyalty or secrecy with others. The term conjurator is often used in historical contexts, particularly in relation to secret societies or conspiracies.