1. Stop the Tomcat processes.
2. Open a command prompt and go to the tomcat\bin directory and run service.bat install. For example:
C:\apache-tomcat-9.0.14\bin\service.bat install
3. Once the service is installed, run the Tomcat Administrator by going to C:\apache-tomcat-9.0.14\bin and double clicking on tomcat9w.exe. For other versions of Tomcat, i.e. 7, 8, the name of the file will be tomcat7w.exe, tomcat8w.exe respectively.
<Please see attached file for image>

4. Click on the Java tab and uncheck "Use Default".
5. Enter, as above, the two lines. Please note the above paths are example only.
-javaagent:<Path_To_AgentJar>
-DagentProfile=<Path_To_AgentProfile>
6. Click OK
7. Restart the Tomcat Service. It should now connect to the Enterprise Manager.