The company switcher allows you to quickly change which of your companies you are interacting with. When you select a company from the dropdown, the displayed data in the app is updated. All the projects, indexers, events, members, etc. are cleared out and the ones pertaining to that company only are displayed.
When you create an account with Graffle, a default company is created for you. This is your own personal space to explore and learn about all features the Graffle Management Dashboard has. When you're ready to start working on a team, you can create a new company and invite others users to collaborate with you on your projects. In the image above, I have already created a second company called 'NFTs R US'. Let's go through the process to create a new company.
In the company switcher dropdown click on the 'Create New Company' option. You will then be presented with a dialog box that looks like this
Give your company a name and click Submit. Once you do that, you will see your new company in the Company Switcher dropdown. Select it and you will see a mostly empty dashboard page. This is also what you will see when you log in for the first time.
Go ahead and create projects, add indexers and do everything as you would in your default company.
NOTE: For more information on adding other members to your company, see section 5 Company. This has everything you need for inviting and removing other users from your company, as well as managing their roles and access to the company's data.