I couldn't start the package like most others on this repo, just think of how the mailserver runs, you can't stop dovecot without manually changing the start/stop script. In the end i came up with using alternative(secondary)  start/stop scripts which are control only by the Zabbix Controls UI. If i had left it as you said to start the services on 'run'checkbox then i would have the problems of which service do i want to start, since zabbix server and proxy can't be started on the same machine.