IntelliJ IDEA's GUI Designer provides several ways to create new instances of the same component on a form without returning to the Component Palette.
- Click the desired component in the Palette.
- Keeping the Ctrl button pressed, click the target locations in the form.
- Release the Ctrl button when ready.
- Select the desired component on a form.
- Press Ctrl+DCtrl+DCtrl+DCtrl+DMeta+DCtrl+DCtrl+DCtrl+D, Ctrl+Shift+Down or Ctrl+Shift+UpCtrl+DCommand DCommand DCommand D.