There is no built-in feature in Windows that allows the app to be on top of other windows. The CScalp team has added an ability to place the terminal app on top of all windows.
To enable the "Topmost" mode, you need to hover the cursor over the upper part of the terminal window (on the button in the form of two rectangles and a cross). Then do the left click to enable the feature. Mode on indicator changes to a tick.
This feature is available for the main window and other tabs: charts, settings, finres and trades.