In Paragon on the top navigation bar, select Preferences then Email.
On the lefthand menu, select Email Signature.
Click on either the name of an existing signature or select Add New.
Using the textbox, create your new signature. A basic template will be provided, however, you can modify the template or delete it to start fresh. Your signature can contain graphics (logos/pictures), links, and different sizes/colors of text.
Please make sure your signature has a unique name and is checked to be the Default. Then click Save.