Login Cpanel and click on the Forwarders icon
Click on Add Forwarder button
Enter the prefix in this box
Make sure to select the correct domain in the drop down. Add the email address you want to forward the mail to.
Click on the Add Forwarder button.
Your done, The forwarder has now been created. Any email now sent to firstname.lastname@example.org will be redirected to email@example.com.
Click on Go Back