In Kiwi video software, the method of changing Cantonese is as follows:

1. Open Kiwi video software.

2. In the movie playback interface, find the voice option.

3. Click on the voice option and find the Cantonese option in the language options that appear.

4. Click on the Cantonese option, and the film will become a Cantonese version.

I hope the above information can help you solve the problem. Please feel free to let me know if you have any other questions.