As described in the FAQ https://ventoy.net/en/faq.html
You can put a file with name .ventoyignore in the specific directory. When ventoy detects this file, it will not search the directory and all the subdirectories for iso files.
You can put a file with name .ventoyignore in the specific directory. When ventoy detects this file, it will not search the directory and all the subdirectories for iso files.