Hi Samele Haell,
Have a Good day.
Thank you for posting to Microsoft Community, we are Happy to assist you.
First of all, we apologize for the trouble and inconvenience caused to your work!
To assist better you, could you please provide us with additional details?
- May I know your affected account type (such as Microsoft365 business account, Outlook.com/Hotmail.com/live.com account)?
- May I know more details regarding your specific Office 365 subscription?
Are you using Microsoft 365 Business Basic, Standard, Enterprise, or Education? Alternatively, is it Microsoft 365 Family, Personal, Office 365 Home and Business, Office 365 Home and Student, or a Personal Outlook.com subscription?
- May I know how account configured in Outlook (such as Exchange, IMAP, POP)?
- May I know what version of Outlook do you have? What version of Outlook do I have? - Microsoft Support.
- Attaching relevant screenshots for your issues with relevant example would be immensely helpful.
Please share screenshot with hide personal and sensitive data
**In the meantime,**until you could provide us with above required information.
Have you tried to view the multiple calendars at the same time side-by-side or combined into a stacked overlay view?
You could follow below steps to enable overlay view:
- In Calendar, in the Navigation Pane, right-click the name of the calendar that you want to view.
- Click Open in New Window.

- In Calendar, in the Navigation Pane, select the check box of another calendar that you want to view.
The calendar that you selected opens next to the calendar that already appears.

- In Calendar, in the Navigation Pane, select the check box of another calendar that you want to view.
The calendar that you selected opens next to calendar that is already displayed. Each successive calendar opens next to the one most recently opened.
- On the calendar tab, click View in Overlay Mode.

That calendar is now in overlay mode with the one you opened first — usually your default calendar.
- To add another calendar to the overlay, repeat step 2.
Note: Please understand that our initial reply may not always immediately resolve the issue. However, with your help and more detailed information, we can work together to find a solution.
Best Regards,
Microsoft Community Moderator