Create New Connection Key
Go to the API key manager site and log in.
Select "New MSO-365 API Key" from top menu.
Select and API key tenant.
Provide a suitable API Key Name. Try not to use any spaces or special characters.
Use the Scopes drop down to subscribe to event types. Select the add button to add them to you Key. Once you have created a key you will not be able to edit it and new one will need to be created.
Click Create.
