how to create a new KNIME workflow view

I have a node and in the node dialog pane, i am obtaining a WorkflowManager which has a sub-workflow loaded inside it. Now , in the next step, i want to display this WorkFlow in editor. Any idea how to do the same? which UI component is used by KNIME to display a new WorkFlow in a new KNIME editor tab and how this is done?

thanks in advance.