Note: it does not duplicate Pages and widgets associated with the original Brand, only the look and feel (i.e. template) .
1. Select the green 'Brands' tab
2. Select 'Duplicate Brand' from the Actions menu
(Find the actions menu by hovering over the cog icon )
3. Give the Brand a unique name
The Brand Name will be the same as the original brand, with the word 'copy' at the end. You can change it to anything else, as long as it's unique.
4. Edit Look & Feel, or Save
Click the 'Edit Brand' button to change the new Brand's logo, colours etc. Or, click 'Save and Finish' if there are no changes.