How can other people on my team set up workspaces using the company account?

Account Administrators can invite others to join the company account.

Navigate to the home screen and click on Account and then Users. Click the Invite More Users button and enter in the information of the user you would like to add. Make them an Account Contributor or above if you would like them to be able to create workspaces. They will be sent an invitation email that contains a confirmation link. Once they have accepted, they will be added to the account.