this sentence doesn't work. did u copy a full and complete sentence?

首席 means chief in English, we can often see that CEO(Chief Executive Officer, in Chinese we call it 首席执行官)， CFO(Chief Financial Officer 首席财务官) In your sentence, it must have a mistake for typo or translation. It should be 首次，means the first time. Edited by Bruce 🐈🐈

可能是误打吧 首席[shǒuxí] -> 首度[shǒudù]

首席一般指的是 第一位，原标题可能是“首次” （第一次）、在传播过程中打错字了 第一位和第一次的区别就像是the first place和the first time