The status bar at the bottom of the program window shows the following information:
The name of the active company
The work date
The current user ID
You can change the active company by double-clicking on the company name in the status bar. This opens the Select Company window where you can switch to another company name.
Similarly, you can change the work date by double-clicking on the work date in the status bar. The Set Work Date window opens to let you change the work date.