To Add a Subview to an Existing Annotation View (AutoCAD Mechanical Toolset)

Click Structure tabBuild panelNew. Find
Click the Annotation View tab.
In the Component section, select the Insert additional views into option and from adjacent the drop-down list, select the annotation view you want to add the subview to.
Click OK. The dialog box closes and the command line prompts you to place views in the drawing area. A preview of the view to be inserted is shown at the cursor.
To insert the displayed view,
1. Click in the drawing area to indicate the insertion point. If the displayed view is incorrect, type V until the appropriate view is displayed.
2. Click to indicate the insertion point.
Press Enter to accept the default rotation or enter the new rotation angle.
Repeat the last 2 steps until all views are placed in the drawing area.
Type D and press Enter. A new annotation view is created and displayed in the browser.