1. After opening the word document, select the horizontal line to be written and press the Delete key to delete the horizontal line, as shown in the figure below.

2. Next, after deleting the horizontal line, enter the name to be signed, as shown in the figure below.

3. Next, you need to select the signature with the mouse, as shown in the figure below.

4. Click the U icon (underlined icon) at the beginning to underline the name.

5, the mouse cursor falls in front of or behind the name, press the space bar to increase the length of the underline, as shown in the figure below.