Download the desired Tomcat version from its official site. You can click here to get Tomcat 8.
Make sure that you match Tomcat with the version of Java that you are using.
Optional step: If you every plan to start up Joget Workflow manually next time by running the usual batch file or through Windows Start Menu, you can modify joget.start to point to the new tomcat folder.
Run service.bat install.
C:\joget\Joget-v5-Enterprise\apache-tomcat-8.0.33\bin>service.bat install Installing the service 'Tomcat8' ... Using CATALINA_HOME: "C:\joget\Joget-v5-Enterprise\apache-tomcat-8.0.33" Using CATALINA_BASE: "C:\joget\Joget-v5-Enterprise\apache-tomcat-8.0.33" Using JAVA_HOME: "C:\Program Files\Java\jdk1.7.0_79" Using JRE_HOME: "C:\Program Files\Java\jdk1.7.0_79\jre" Using JVM: "C:\Program Files\Java\jdk1.7.0_79\jre\bin\server\jvm.dll" The service 'Tomcat8' has been installed.
To verify, you may check in Computer Management -> Services.
Next, go to the Java tab, append the following lines in the Java Options field. This is to define the wflow home folder from where Joget Workflow will run.
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 8 - Windows service HOW-TO