Note: the interface may have been upgraded since this video was made, but remains intuitive.
Your dash allows you to manage your tasks and view your availability quickly. It basically lets you drive your cogsworth booking app from a single page!
When you signup, you just have to click through the prompts on the dashboard to get your % up and setup your Cogsworth. Once, you have reached a minimum of 75%, the full dash will unlock. As more features become available, you will see new prompts arise on the dash.