As of LCOS FX 11.1, it is now possible to select host or network objects that have already been created in host group objects ( ).

For Hosts / Networks, you can now alternatively select an already created host or network
object under Desktop Object/Name. Changes to these referenced desktop objects are automatically applied to this
host group when the rules are activated. Editing the existing host or network object from this dialog is only possible once it has
been added to the list. In the info area, referenced objects are marked with a , so they can also be edited directly from there.