Flex comes with a customizable Author Box. You can access the Author Box by going to Thesis → Skin Content → Author Box (Flex), where you’ll see the following options:
Options
Display the Author's Avatar— If enabled the authors avatar will be displayed.Avatar Size (default 120px)— You can control the size of the avatar with this option.Align Avatar— This option allows you to align the avatar left or right.Link author names to archives— If this option is selected the authors name will link the the authors archives page that is generated by default.Add nofollow to author link— select this option if you don’t want robots to follow this link.