To edit the node properties in the WebUI, select the line in the main WebUI for the node, then select the Edit Properties option from the options menu on the right.
This opens a dialog to allow editing of the node properties.
Changes are not deployed after the dialog is closed. Instead, editing can be performed on several different nodes and the changes are stored until the Commit button on the right is pushed. The commit operation will then deploy all the pending changes to all nodes.
Instead of deploying changes, the administrator can choose to instead press the Reject button. This will cause all pending changes to be discarded.