Dear all, We have a floating licence server in my research institute. My research group (10 people in the institute) have a cluster of machines. We would like to use the IDL floating licences for the cluster. But we would like to limit the use of this cluster to ONE single licence at a given time. Therefore here is my question : Is it possible to configure the licence server to limit to at most one single licence for a range of machines (defined in a group for example). Then if the cluster is not using the licence, it should be used by other people in the institute. With this configuration, we could install IDL on all machines of the cluster but only one IDL could run at a given time on the whole cluster. I am not sure that I am making myself clear ... Thanks for you help anyway, Cheers Patrick