It is possible to have logical collectors with Core however it is not officially supported (it is officially supported in Service Dynamics).
It looks like you've already created the collector in the GUI so now you need to run all the daemons that will be needed to monitor whatever device you assign to this collector. This means you need zenping, zenmodeler, zencommand, zenprocess, zenperfsnmp, zenstatus at minimum. There may be others.
Create the directory $ZENHOME/log/VmCollector0001
There are a couple of different ways to start multiple daemons but this is probably the easiest way. In $ZENHOME/bin copy each of those daemons into a new file called VmCollector0001_daemon (i.e. VmCollector0001_zenping). Modify the new file and change CFGFILE to be reference VmCollector0001_daemon.conf.
Then go to $ZENHOME/etc and create this conf file and make it look something like:
monitor VmCollector0001
logfile /opt/zenoss/log/VmCollector0001
Then in $ZENHOME/etc create a file called daemons.txt and list all of the "VmCollector0001_daemon" that you just created and restart zenoss (you can try to start just one of the daemons if you want).
If everything starts ok you can then assign a device to this new collector.
I'm working on this setup now and most of this was off the top of my head. I have toyed around with changing init scripts to start multiple daemons but this seems to be the cleanest way and allows for restarting an individual collector daemon if required.
I suggest you try this in a dev environment first.
--Dennis
