I installed Tomcat with home brew brew install tomcat. On Selecting Tomcat server to add a server to the application server I get this
brew install tomcat
Warnin
Try selecting the libexec subdirectory in IntelliJ - i.e. /usr/local/Cellar/tomcat/8.5.9/libexec
libexec
/usr/local/Cellar/tomcat/8.5.9/libexec