https://help.tallysolutions.com/docs/td9rel54/td9/using_language_browsers/navigation_between_windows.htm

Navigating Between Windows in Tally.Developer 9

Tally.Developer 9 provides shortcut keys for navigating to different windows apart from the mouse click on the window tab.

To navigate between windows

1. Go to View > Go to  Window from the menu bar as shown below:

2. Select the Window for navigation and the developer will move focus to that window. It also displays the shortcut key for each of the windows.