How to Change Your Website Logo
To change your website logo, visit your admin panel > settings tab. On this page, near the top, you should seen an area to upload your own logo.
We recommend the image used to be either .jpg or png and to be square in dimension.
Note: You must be the website owner to modify these settings.
How to use the website logo as all default member avatars
To use the uploaded website logo as the default member avatar, simply select the checkbox below the uploaded logo in your admin > settings area "Use this image also for all default user avatars that join your website."