Using classic Outlook for Windows in business environments
Hi @Kheil Conocer
Thank you for reaching out to our Q&A forum.
If you want to access to someone's calendar, you will need to ask that person to grant you the permission to the calendar.
Ask them to go to Calendar, right click the calendar, choose Properties > Permission > Add.
They can customize which actions you can do with their calendar. After the grant you the permission, you now can add it to your Outlook.
In Calendar, select Add Calendar, and then select Open Shared Calendar. Type a name in the Name box or select Name to select a name from the address book.
I hope this information helps.
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