To quickly enable or disable parts of your workspace, either:
Use Ctrl+click to select multiple nodes, or press the left mouse button and drag the cursor over a specific area. Choose Disable or Enable from the command menu.
Choose Enable/Disable Nodes from the Tools menu and use the checkboxes.
Note: Especially for larger workspaces, it is sometimes better practice to disable links.
To output only one feature type, right-click on a feature type definition and, from the command menu, choose Enable This Node Only.