Right-click to display the shortcut menu.
On the shortcut menu, click Draw In View.
Add the graphics you want. For example, you can add images or pictures using the Insert-Image command, or create lines or shapes using tools on the Draw group of the Sketching tab of the ribbon.
Do one of the following:
For a 3D model view, choose Home tab→Close group→Close Draw in View to close the Draw In View window.
For a 2D view, you can click the sheet tab to change to the working sheet from the 2D Model sheet.
Tip:
If you change the scale of the part view later, the graphics you added will also change scale.
If you move the part view later, the graphics you added will also move.