For some users, just one Crossbeam company isn't enough. If you're an investor, consultant, serial entrepreneur, or just someone with their hands in a lot of cookie jars, Crossbeam can support your use case.
When a user is granted access to multiple company accounts, they can choose between the active company using the "Switch Companies" picker that appears in their pop-out menu in the top right of the platform:
The company whose account you are currently viewing always appears at the top of that menu, and the alternate companies appear below in the section indicated by the red arrow.
Note that you are only ever accessing Crossbeam from the perspective of one company at a time. Just because you have access to multiple companies does not automatically combine or otherwise break down the data barrier between those companies. When you switch companies, you switch contexts entirely and your status with other companies has no bearing on what you can access or view.