If you're reading this article, you're probably wanting to add a different logo for each Chameleon Group you've setup. 

How 

Simply go to Editable Content > Header > Edit > and click on the cog icon on the right hand side

Then click on the Logo Selection dropdown menu and select Custom. A custom logo upload option will appear at the bottom of the window and you can upload you logo here. 

You will need to do this for each Chameleon Group.