Similar to Joget v3's guide, in Joget v4, you will need to first download the Tomcat 7 bundle for Windows.
Then, follow all the steps as documented in Joget v3's article - Installing Joget as a Windows Service.
After you have successfully added Tomcat as a service, you may also want to add MySQL as a service and make Tomcat dependent on MySQL as well.
Reference: Apache Tomcat 7 - Windows service HOW-TO