You can use PayPal as a merchant for the E-Commerce tools (other than point of sale). When customers go through the checkout process they get redirected to PayPal, and you may want to bring them back to your website after they have paid through PayPal.
Follow the steps below to set up your PayPal automatic redirect.
First, log into your Paypal account. You must have a business PayPal account to set up the automatic redirect.
At the top right, click on the PROFILE button and then click on PROFILE AND SETTINGS.
On the left hand side of the My Profile page, click on MY SELLING TOOLS.
In the MY SELLING TOOLS section, click on UPDATE next to WEBSITE PREFERENCES.
Enter your RETURN URL in the field provided and click on the SAVE button at the bottom of the page.
Your Return URL can be found in your E-Commerce tool under Payment > Merchants > PayPal. See the image below: