Dashboard → My Brands:
Every brand account comes with a brand kit: Logo, brand colours and brand fonts that can be accessed when creating designs.
Each brand account has its own favourites and my files folder.
You can also share your brand with anyone:
Coming Soon: Global brand settings
Making any updates in the brand kit and the logo/brand colours/brand font has been used on a template, then making any changes will auto-update everything globally in your brand account.