There is no option now to have the schema display within the title bar of the minimized window.
Show schema in the Windows bar option may help:
1. Go to View | Toad options | Toolbars.
2. Check 'Show window titles on Window Bar' and 'Show connect strings on Window Bar'.
The window bar can be dragged to the bottom if required.
In additon, right click the Windows Bar and 'Show buttons for current connection' can be selected. This will only display the windows for the session that are currently in focus.