Verb［せる・させる］

The causative form expresses that someone causes or allows someone else to perform an action. It is commonly used to indicate making, letting, or having another person do something. The basic approach is to form the causative from the verb: for most verbs, the plain form becomes させる (to make/let), while する -> させる and 来る -> 来させる. In polite speech, you would use させます/させました, etc. Typical contexts include giving directions, permissions, or arranging for someone to perform an action, and it can imply the subject’s control over whether the action happens. Examples show varying nuance from forcing to granting permission to arranging for someone to act.