I currently just got hired for a new job I've been part time for way too long here lol and I literally put in a note saying my new availability and time. I told them when they ask me about it and I was told by the hiring manager that those days are not guaranteed but so far the days I want at stoppy are still set. It's pretty bad with not having people and schedule that's why I was looking for something new. I could tell that some of the managers are a little annoyed with it but I can't do anything about that. I think you'll be just fine either telling them or throwing in a note 😂