This page will help you in Uploading / Creating and Deleting Private Key for your Domains.
Upload Private key
First select the Domain for which you want to add Private Key.
Then you can paste you Key in the given text area.
You can browse your Key file from your local system.
Then click on Upload button to add a key file.
Create Private key
First select the Domain for which you want to create Private Key.
Then select the size for your Key.
Then click on Create button to create a Key file.
View Private key