• Open Evolution
• From the menu bar, click Edit
• Click Preferences
• Choose Add from the Mail Accounts menu.

• Click Next. 
• Enter your name as you would like it to display in the Full name field  and enter your full email address (for example "n.s.member@leeds.ac.uk") in the Email Address field.
• Click Next. (you can click Skip Lookup if this take too long)

The account information screen will find incorrect information. Select Exchange Web Services from the drop-down. 

Enter the following information for each field:

• Username: <your Username>@leeds.ac.uk
• Host URL: https://outlook.office365.com/ews/exchange.asmx
• Select OAuth2 from the 'Authentication' Dropdown box
• Select 'Override Office365 OAuth2 settings' 
• Tenant : bdeaeda8-c81d-45ce-863e-5232a535b7cb
• Application ID : 20460e5d-ce91-49af-a3a5-70b6be7486d1

Click next through the remainder of the setup and then click apply. 

When Prompted enter your Credentials and authorize with Duo. 

Possible problems..

- If you get an error 'doesnt support OAuth2' then you need to install evolution-ews.x86_64 please log a call including your machine name andthe text  'install of evolution-ews on linux for use with duo.'

- You may find you need to click fetch url (this looks to be the case for debian systems) on the below screenshot. if this fails to fetch the url then just cancel and continue.