We have a relatively new setting that your system admin can add to your database on the Settings page. The setting ID is named ChurchWebSite and the settings itself would be, of course, your church's website address . Example: http://www.Bellevue.org
If a database has this setting, when a person completes an online registration, they will be presented with two links on the completed transaction page: Start New Transaction, which lets them register someone else for the same event; or Return to Church Website, which will take the registrant to your website.
Check with your system admin to see if your database has this setting.