Even if you do not intend to use clusters in your
project, you need to define at least one. Tags and servers will
default to run in the defined cluster.
In the Project Editor, select
Servers | Clusters. The
Cluster dialog box displays:
In the ClusterName field, enter the name
of the cluster. The name needs to be unique to the project and not
contain spaces.
In the Comment field, enter any useful comment. This property
is optional and is not used at runtime.