Answer
When activating the online employee portal for the first time an employee will be notified by email of their username and password.
To trigger the email make sure to first activate the employee with the tickbox and then click Refresh Employee Portal under Employees >> Details >> Online Portal.
You should see a notification on screen which looks something like this:
The employee will receive an email like this, which includes their username and password. They can then use these details to login to our Employee Login page here. It is recommended that they change their password upon logging in.
The other time an employee might receive an account email is when their name is changed. The reason for this is that their username/login will change since it is based on their full name.