You can host separate nodes on cluster's Servers which are not used by any configuration. 

Failover doesn't cover these nodes since they rely on local databases. If the host Server fails, the nodes can not be migrated. 

To create an independent node, do as follows:

1. Go to the Configuration tab.
2. Point the cursor at  and click 1.
   

3. Click  and select Servers where independent nodes should be launched.

   You can create only one independent node on each server.

   

4. Click the Logging button to set the logging options (see Setting up basic configuration).
   
5. Click the Apply button.

The nodes are now created; they should start automatically.