Open "System Preference" and choose "Internet Accounts".
Select "Exchange" to perform the setup.
Enter your name, HKU email address and HKU Portal PIN. Then click "Continue".
Under Account Settings, enter the following information:
HKU Portal UID
HKU Portal PIN
Note: You may give the account a preferred name in the "Description" field.
After connecting to the server, the account summary will be shown, click "Continue" to proceed.
Select the apps according to your preference or use the default setting. Click "Done" to finish the setup.