Your dashboard shows only the workspace you're in (Personal or a team), so a new account has little to show until you add credit, create a project or run a model.
In a team? Credit Balance, Transactions, Coupons, Projects, Project Usage and Task History show your current workspace in a banner with Switch Workspace and list only its data, with no combined total. The Organizations page also has Switch per team and Switch to Personal, and your choice is remembered per browser.
Studio generations aren't in Task History; they're in Studio's Activity tab and your Studio chat sessions.
Task History views: Models lists regular runs, Runnings unfinished tasks and Trains training runs, which fine-tune a model on your data (empty if you've never run one). They're tabs in the Activity panel and a menu beside the search box in Task History.