Resizing model window in Simulink

Is there anyway to resize the white model window in Simulink (release 2020a) and minimize all the wasted gray space to the left of it, as shown in the figure below? Unlike most other layouts, this appears to be one fixed window and you cannot drag the line between them to resize the model space.

Thanks

Answer 1

[stozaki]

You can choose to minimize the gray pane by right-clicking on the gray pane.