Before Exchange can be selected as a calendar source, details of the Exchange server and the user's email account on that server need to be entered in the Avaya Workplace Client settings.
Exchange Server 2013 and later versions supported
Depending on the operating system, click on the settings icon or click on the Menu icon and then the settings icon.
Select ServicesExchange Calendar.
Enable Exchange Calendar.
Enter the Exchange server domain and server address details
Go to Accounts.
In the Exchange Calendar section, enter your email account details.
Click Done.
Result
Following the restart you can select Exchange as your calendar source.