You can open multiple sessions within Token2Shell. Token2Shell assigns each of those sessions to a tab on the main screen.

You can also use the session tabs to have a session screen detached from the main window. Double-clicking on a tab detaches the associated session screen. Once detached, the session screen acts like a dockable pane, i.e., you can dock with other session panes or freely move around the desktop area. If you wish to attach a session pane back to the main window, simply double-click on its pane title area.