You can install Object Monitor in a quite mode by launching the setup with key "/qn". For example, "object_monitor.msi /qn".
For automatic custom installation of specific components you can use the "ADDLOCAL" key that takes the following values:
For example, to install only the components of the "Main" and "License" in silent mode with the following command: "object_monitor.msi / qn ADDLOCAL = OMMain, OMLicense"