[ovirt-users] how to setup image-io-proxy after initially disabling it

Hello, I'm on oVirt 4.1.7, the latest in 4.1 right now. Initially in engine-setup when prompted I set Image I/O Proxy to false. Configure Image I/O Proxy : False Now instead I would like to enable it, but if I run engine-setup I can't find a way to do it. I can only confirm the settings in a whole or exit the setup... How can I do? Currently I have these packages already installed on the system ovirt-imageio-proxy-setup-1.0.0-0.201701151456.git89ae3b4.el7.centos.noarch ovirt-imageio-proxy-1.0.0-0.201701151456.git89ae3b4.el7.centos.noarch and [root@ovirt ~]# systemctl status ovirt-imageio-proxy ● ovirt-imageio-proxy.service - oVirt ImageIO Proxy Loaded: loaded (/usr/lib/systemd/system/ovirt-imageio-proxy.service; disabled; vendor preset: disabled) Active: inactive (dead) [root@ovirt ~]# Can I simply and manually enable/start the service through systemctl commands? The same question arises in case I had not / had enabled VMConsole Proxy and/or WebSocket Proxy during install and in a second time I want to enable / diable them. Thanks, Gianluca