To begin adding a bio to your group, first navigate to your group page through the top left Main Menu.
Scroll down to My Groups and select the group that you would like to update.
Click on the Edit button on the right hand side of the page, next to your bio. By default, your groups bio will be listed as "Member of The Coaches Site since x".
From the bio prompt, type your desired group bio and click Update.
Congratulations! You have updated your groups profile photo!