How to Add Lines
You can draw several types of line. To do this, click Line in the Tools group of the Home tab and select a line type. Your cursor becomes pencil-shaped.
In the Work Area, click the pencil, drag, and release to draw the line.
Use Line in the Shape Style group of the Home tab to change the thickness, dashes, arrowheads, and color of the selected line(s).
To select more than one line, hold the Shift key while clicking on each line. To select all of the lines on the page, click the Select Menu on the Home tab and choose All Lines.