The size of the Fly the Line app window can be increased/decreased by clicking and dragging the corners of the window.

The app can also be minimised by pressing the mimimse "-" button at the top right corner of the window. When minimsed, the app will continue to run in the background, allowing for flight monitoring to occur when the window isn't in focus. 

A confirmation pop-up box will appear when you press the close "x" button at the top right corner of the window. When the app is closed, all Fly the Line features are stopped and the app will disconnect from the simulator. It is therefore important that the Fly the Line app is always open or minimised between dispatch and arrival. 

If the "Always On Top" option at the bottom right corner of the Fly the Line app is enabled, this will force the window to always appear on top of other windows.