How many managers do you need to tell in advance that you are calling off for Aprl 10, 2026 starting on March 31, 2026...

I'm confused how do you get marked as absent and no call on a day (today) at a job you literally called in and told a manager last week on Tuesday, March 31, 2026 that you needed to have today off work because you are working at your new job for training. But you also told to other managers at that same job one on the phone and one in person on Saturday, April 4, 2026 that you wouldn't be able to work today's shift and you even wrote it on the schedule for the week on the 1st page saying you weren't going to be able to com in for your shift on the 10th along with writing it on the day of the 10th on the schedule for the week.