The Logo section allows you to quickly upload custom branding to use as your Logo or Title across the whole site. All you will want to do is make sure your branding has a transparent background and then just click 'Select an Image' to upload it!
Once it is uploaded you will see it automatically pops onto your site preview and gives you the option to customize its size through the size slider.
Don't have custom branding? Not a problem! Simply type in the title you'd like into the Title text section and it'll create a title site wide. In the Title section you will also find Typography and color settings to further customize your title.
To further customize your Logo or Title you have the ability to alter the padding around it, as well as the ability to set it up to automatically link somewhere anytime it is clicked.