Open the Registration form and select the Products tab.
Creating an Early Bird Registration fee is exactly the same as creating a new registration fee. The only difference is in the Availability Dates.
Click Add New Registration Fee.
Enter the fee details.
Select Available From. This is the date which you want the early bird fee to begin.
Select Available To. This is the last date to register using the early bird fee.
Finish entering the rest of the details as you would for any product you create.