If you do not see it, click the Window menu, then click Character to open it. Click the “Underline” button, symbolized by a “T” with an underline, second from the right in the row of buttons. Related Reading: How to Underline Text In Word 2007.Step 3. Click the Type icon, symbolized by a “T,” on the Tools pane.tep 3. Check the right side of the workspace for the Character pane. If you do not see it, click the Window menu, then click Character to open it. Step 4. Click the “Underline” button, symbolized by a “T” with an underline, second from the right in the row of buttons on the Character pane.