Rejigger (verb)

1. To reorganize or rearrange something in a new way.
2. To adjust or fix something, especially mechanical or technical equipment.

Origin:

The word rejigger is believed to have originated in the late 19th century, possibly as a variant of the word "rigger" meaning to arrange or to fix something.

Examples:

1. He rejiggered the schedule to better accommodate everyone's availability.
2. She rejiggered the recipe to make it healthier.
3. The mechanic rejiggered the engine to improve its performance.
4. They rejiggered the system to make it more efficient.
5. He rejiggered the plan to make it more realistic.