- To add a tab, click Sheet Metal > Base Flange/Tab
on the CommandManager.
- Click on the right side of the base flange.
- On the CommandManager, click Sketch > Line.
- Click on the vertical edge of the face and move the pointer toward left.
- Again, click to draw a horizontal line.
- Move the pointer toward endpoint of the line. The arc mode gets active.
- Move the pointer toward left, and then downwards.
- Click to create an arc.
- Close the sketch and add dimensions.

- Exit the sketch.
- Select the Merge result option and click OK on the PropertyManager.
