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Setting up a shared calender in 0365

lianne143 asked

We have exchange 2013 and have migrated all our staff mailboxes to 0365.
We have a request from senior management and they want me to create a shared calendar and one of the staff will be the owner of the calendar putting appointments for the senior management and also the owner of the calendar would like to share this calendar to all the 8 senior management staff.
The senior management will be accessing the calendar on their iPhone  and android phones  and also through outlook client from their PCs.
Please let me know as what is the best way of setting up this and  tutorial will be great.
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Saif ShaikhServer engineer

You can create a shared mailbox which will have default calendar which can be shared by sending an invitation to all users to be able to access the calendar.

Shared mailbox in office 365 does not require license.
Saif ShaikhServer engineer

You can also provide permission to users as per requirement on the calendar like owner, editor etc.
Most Valuable Expert 2015
Distinguished Expert 2019
There are many ways of creating the shared calendar, however accessing in on a mobile device can be tricky. In a nutshell, you will have to make sure that the "new sharing model" is used, so review this article and follow the steps there: https://support.office.com/en-us/article/calendar-sharing-in-office-365-b576ecc3-0945-4d75-85f1-5efafb8a37b4