To activate Paypal as a payment gateway ;
1. Find Settings and choose Payment.
2. Click Add Payment Gateway button.
3. Choose Paypal Express from the Payment Gateway section.
4. Type your Paypal account’s e-mail address in the E-mail section.
Note: If you don’t have Paypal Account, first, apply for it from Paypal.
If you want you can rename the gateway from the Payment Method Name section.
5. Click ADD to save.