Please follow the all-in-one installation guide to install COST/EMF.
After installing Java, PostgreSQL, and Tomcat, they would edit and run the batch file Install_EMF.bat. That does need to be run as an administrator if the EMF_CLIENT_DIRECTORY or EMF_DATA_DIRECTORY are shared. If the step
Right-click the file Install_EMF.bat and select “Run as administrator” to start the CoST/EMF server installation.