You can use Outlook on the web at portal.office.com to give someone permission to manage your calendar. You can give them Edit access, which lets them edit your calendar, or Delegate access, which lets them see private details in your calendar. The Delegation feature also lets others schedule and respond to meetings on your behalf.

View the article Share and access a calendar with edit or delegate permissions in Outlook to learn how to:

• Assign a calendar editor or delegate
• Set meeting request and response options
• Let delegates see details of private items
• Stop sharing a calendar with an editor or delegate
• Manage someone else's calendar in Outlook on the web

Additional related links:

• Share a contacts folder with others
• Share your calendar in Outlook on the web
• Working with multiple calendars in Outlook on the web