Signature of Graphite Document Open the document, click the Insert button, then click the Signature Settings to fill in, and then click the OK button after completion. Or create a signature line, select a signature, then type a name in the box next to the X or click the image selection button, and finally click the signature button. You can sign a word document on your mobile phone, import the signature into the document, change the surrounding text so that it floats above the text, then find the format and choose to set transparent color, or select the layout bar in the Format Picture panel.