空闲位置怎么增加？ ![附图](https://image.baidu.com/search/down?tn=download&word=download&ie=utf8&fr=detail&url=https%3A%2F%2Ftxc.qq.com%2Fdata%2F350493%2F2023%2F0720%2Fe09718a09f87509ba8815d76b16f6829.webp)