It is a lot to handle. The Notion events are more for reference. What did I work on (modify the entry in a database) on a particular day or when was the last time I worked on an entry. Each entry in the database is a web page, every entry is a combination of a form, and blog. The event date is mostly historical.
The printed work schedule is more of time blocking. Yes I manage a small amount of flexibility on the daily aspect but the schedule is time blocking as an input. My events are not planned during that time. Small task that can be completed during any free time of course is taken advantage of.
These inputs of events are mentioned just as a context to calendars variety. To integrate all event or task inputs into one calendar would be nice. I can not get my employer to enter the work schedule into the Microsoft Calendar. I assume as of now they are using Microsoft Excel to print this form.
When my family was using all android devices I linked all the google calendars but they honestly just used the calendars to see if I was at work. They were not an input that was integrated by the choice they did not use the calendars.
Using just one calendar for everything may work for you. For me the input of all events is +50% of the work.
Talking to my friend who has two jobs at this time, one full time and one part time. Could benefit from collaborating on the same calendar with her part time job. I asked how do they communicate confirmed work events. They use SMS, yes just texting confirmations. They would need to team up and get on the same calendar. Agree to collaborate and then a privacy friendly app or event sharing setting could tie the chosen calendar platform to a privacy friendly calendar.