各自

1. Origins, structure, and basic meaning

• Structure: 各自(かくじ) refers to each individual in a group.
• Basic usage: It is used when describing or requesting preparation or choices made by each person.

2. Common pitfalls and similar expressions

• で and が
  • 各自で用意し describes each person taking care of the preparation.
  • In 各自が用意する, が marks the person doing the preparation.
• Together and individually
  • みんなで focuses on acting together as a group; 各自で focuses on what each person does.