in pilot position (F1) if u press, at same time "8"+"0" (do not forget to have the numlock on hehehe)
u will find what u are looking for between the pedals.
u can also use zoom or cursor's arrow to approach the small below window.
unfortunately that window is covered by the bomb so u can see quite notthing until have dropped it.
it's not servants at all before, during an so after a drive.
i have read that most of stuka, bombing in drive, had a
trolley that drops the bomb sending it away from the
nose-propeller.
the trolley was adjustable beeing able to auto-drop the bombs as the plane had arrived at a fixed altitude so the pilots had to look after only at drive without mind when exactely drop
....so i think...
the window was used to manage the trolley and the bombs
but i'm not sure of this