To operate screen space, you can group multiple windows into a single tabbed window.

For example: you can combine the Open Positions window…with the Orders Window.
Right click on the header and drug.
Window outline
Drag the window inside another window. When the outline snaps in the middle, let go of the right mouse button.
The windows are now tabs in a single window.
 
And there is more room on the screen for our chart.
Click the tabs to switch between windows.
Tabs can appear at the top or bottom of the window. Right click:
To close the active tab, click this X You can pull a tab back into its own window. Right-click the tab and drag it outside the window.
Example: Combine several chart windows into one