How to Create a Shared Calendar in Office 365

To create a shared calendar in Office 365, you need to create a shared mailbox and assign full access permissions to users who will use its calendar. The calendar that comes along with this shared mailbox will become the shared calendar for the selected users.

Follow the steps below to create a shared calendar in Office 365:

1. Log in to your Office 365 portal with your admin credentials and click the Admin app to access Microsoft 365 admin center.
2. In Microsoft 365 admin center, under the Admin centers section, select Exchange.

3. In the Exchange admin center, go to recipients, and shared.

4. Click the plus icon (+) to add a new shared mailbox.

5. Provide the name for your shared mailbox, enter an email address and add users that will have permissions to use this shared mailbox.

Note: Instead of adding individual users one by one, you may want to create a security group first and then add this security group to the shared mailbox. This is useful when you need to manage permissions for many users in the organization.

6. Click Save to create the shared mailbox.

7. The new shared mailbox should appear on the shared list. Double-click it to edit its settings.

8. In the mailbox delegation tab, make sure the selected users (or a security group) have Full Access permissions assigned to this mailbox. Click Save to finish creating the mailbox.

Note: Full Access permissions will allow the users to add, edit and delete calendar entries in the shared calendar. Users that have no permissions to this shared mailbox will only be able to see the Free/Busy statuses.

Using the Shared Calendar in Outlook

When you have finished creating the shared mailbox, you can start using its calendar as a shared calendar. Check if you can see it in your Outlook. It should appear automatically under My Calendars.

Once you have the shared calendar access in Outlook. You may import the Diversity Calendar events into Outlook from CSV file.

Importing a Calendar into Outlook from a .csv File

Open your Outlook Calendar.

1. Click File > Open & Export > Import/Export.
2. Select Import from another program or file > Next.
3. Select Comma Separated Values > Next.
4. Select Browse > Open.
5. After selecting duplicate handling options, click Next.
6. Select Calendar.
7. Click Next.
8. Make sure you have Import… selected.
9. Click Finish.