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How to make such a sidebar on a 3d scene so that it does not hide the scene?

How to make such a settings panel so that you can see the scene with 3d figures as in the picture?
my scene is under the panel.
I create a BorderPane,
And she completely closes the scene.
My code is in the second picture, but I don’t know how to make the scene visible
RadioButton rdoEasy = new RadioButton("Easy");
RadioButton rdoMedium = new RadioButton("Medium");
RadioButton rdoHard = new RadioButton("Hard");
var groupDifficulty = new ToggleGroup();
groupDifficulty.getToggles().addAll(
rdoEasy,
rdoMedium,
rdoHard
);
ToolBar toolBar = new ToolBar();
toolBar.setOrientation(Orientation.VERTICAL);
toolBar.getItems().addAll(
new Separator(),
rdoEasy,
rdoMedium,
rdoHard,
new Separator()
);
BorderPane borderPane = new BorderPane();
borderPane.setLeft(toolBar);
borderPane.setCenter(group);
borderPane.getCenter();
Scene scene = new Scene(borderPane, orgSceneX, orgSceneY,true,SceneAntialiasing.BALANCED);

JavaFX: Add textField and Labels to scene

I'm trying to get two tabs, each with their own little form that contain labels and textfields/textareas. I thought my making a "Master" VBox that should display everything but nothing other than the tabs are showing and neither am i getting any errors.
How do I add them to the scene?
// Label and Button variables
private Label fname,lname, appt, AppointmentInfo;
protected String input;
#Override
public void start(Stage primaryStage) throws Exception {
primaryStage.setTitle("Person Appointments");
primaryStage.setWidth(500);
primaryStage.setHeight(500);
//Create and set Tab Names
Tab InfoTab = new Tab();
Tab ApptTab = new Tab();
InfoTab.setText("PersonInfo");
ApptTab.setText("Appointments");
// VBoxes
VBox personInfoBox = new VBox();
VBox FirstBox = new VBox();
VBox appointmentBox = new VBox();
// Setup labels and fields
fname = new Label();
lname = new Label();
appt = new Label();
AppointmentInfo = new Label();
fname.setText("First Name");
lname.setText("Last Name");
appt.setText("Appt Count");
AppointmentInfo.setText("Appt Info");
// Text Fields
TextField firstNameText = new TextField();
TextField lastNameText = new TextField();
TextField appointmentText = new TextField();
TextArea apptInfo = new TextArea();
firstNameText.setText("First Name Here");
lastNameText.setText("Last Name Here");
appointmentText.setText("Appointment Here");
personInfoBox.getChildren().add(fname);
personInfoBox.getChildren().addAll(firstNameText);
personInfoBox.getChildren().add(lname);
personInfoBox.getChildren().addAll(lastNameText);
appointmentBox.getChildren().add(AppointmentInfo);
appointmentBox.getChildren().addAll(apptInfo);
// Grid for Tabs
GridPane grid = new GridPane();
GridPane grid2 = new GridPane();
grid.add(fname, 0, 0);
grid.add(firstNameText, 0, 1);
grid.add(lname, 1, 0);
grid.add(lastNameText, 1, 1);
grid.add(appt, 2, 0);
grid.add(appointmentText, 2, 1);
grid2.add(AppointmentInfo, 0, 0);
grid2.add(apptInfo, 0, 1);
InfoTab.setContent(grid);
ApptTab.setContent(grid2);
// TabPane
TabPane tabPane = new TabPane();
tabPane.getTabs().add(InfoTab);
tabPane.getTabs().add(ApptTab);
InfoTab.setClosable(false);
ApptTab.setClosable(false);
InfoTab.setContent(personInfoBox);
ApptTab.setContent(appointmentBox);
VBox one = new VBox(tabPane, personInfoBox);
Scene scene = new Scene(one, 500, 500);
primaryStage.setScene(scene);
primaryStage.show();`

You can't assign a Node more than once to the SceneGraph:
A node may occur at most once anywhere in the scene graph. Specifically, a node must appear no more than once in all of the following: as the root node of a Scene, the children ObservableList of a Parent, or as the clip of a Node.
http://docs.oracle.com/javase/8/javafx/api/javafx/scene/Node.html
You assigned e.g. lname to personInfoBox AND grid. So finally lname will be assigned to grid only. Then you set grid as content for a Tab and after that you set personInfoBox as content, which is now empty

Get Default JavaFx Window Icons

I want to add a title bar to my undecorated JavaFX Window and I display the default icons(close, minimize) to be displayed there.
My Stage contains A Border Pane with an HBox inside
BorderPane root = new BorderPane();
HBox title = new HBox();
Button close = new Button();
Button min = new Button();
title.getChildren().addAll(close, min);
root.setTop(title);
root.setBottom(grid);

JavaFX Scene: Add Scene To Tab

Tab tab1 = new Tab();
Tab tab2 = new Tab();
How do I add a scene to a Tab?
I want to make it so when tab1 is selected the scene is showing and when switched to tab2, it is not there.
I tried doing tab1.setContent, it has to be a node.
I tried doing dialog.setOwner(tab1), it has to be a window.
TabPane tabPane = new TabPane();
Tab tab1 = new Tab("FIRST TAB");
Tab tab2 = new Tab("SECOND TAB");
tab1.setContent(new VBox(new Text("Scene Below:")));
tab2.setContent(new VBox(new Button("dsadsadassda")));
tabPane.getTabs().addAll(tab1, tab2);
final Stage dialog = new Stage();
dialog.initModality(Modality.NONE);
dialog.initOwner(tab1); // I can't, it has to be a window
dialog.initStyle(StageStyle.UTILITY);
dialog.show();
stage.setScene(new Scene(tabPane, 1000, 680));
stage.setMaximized(true);
stage.show();

well the design depends on what you want to do , in your case you should specify a CustomTab that extends the JavaFx Tab and as default it would hold a ScrollablePane or whatever pane you want , which will be bound to have the same width and height as the Tab, so when you do setContent() you should be able to pass every JavaFx's object, because you will add that object to the inner tab pane.

Automatic resizing of controls in javafx2

I am trying to add a ToolBar control, containing 2 Buttons and a TextField in my scene graph.
I want that the TextField control gets automatically resized and acquire all the space available into toolbar. So, I used the HBox layout control to add the buttons and textfield.
I did as followed:
ToolBar tb = new ToolBar();
HBox hbox = new HBox(8);
TextField tf = new TextField();
HBox.setHgrow(tf, Priority.ALWAYS);
hbox.getChildren().add(new Button("<-"));
hbox.getChildren().add(new Button("->"));
hbox.getChildren().add(tf);
tb.getItems().add(hbox);
But its not working. Where am I going wrong? Please help.

You can try next:
ToolBar tb = new ToolBar();
TextField tf = new TextField();
HBox hbox = new HBox(8);
hbox.prefWidthProperty().bind(tb.widthProperty().subtract(20));
HBox.setHgrow(tf, Priority.ALWAYS);
hbox.getChildren().add(new Button("<-"));
hbox.getChildren().add(new Button("->"));
hbox.getChildren().add(tf);
tb.getItems().add(hbox);