In the My Company settings under "Enroll Form," you can change the default URL where Enrollees are redirected after enrollment. By default, everyone is directed to the home page of the Customer Portal.
Click on the person icon in the upper-right corner, then on My Company.
Click on the Enroll Form setting on the left menu bar. Under this setting will be a block called "Redirect URL." Copy and paste the website URL where you want all your customers to be directed after enrollment.
Be sure to click "Save Settings" to save the new landing page: