Jabo bomb release controls

[akdavis]

What a wonderful resource this site is. Maybe someone here can answer this question: on Bf-109 Jabos carrying 4 x SC 50 bombs on the centerline, how were these bombs released? Singly, pairs, or salvo? Or were all three possible? I suspect the answer lies somewhere in these, but my lack of German is a barrier:

D(Luft)T 229/4 Bedienungs- und Beladevorschrift für Abwurfwaffe, 1940, 30 S.
D(Luft)T 2404/Bo Beladung, Bedienung der Abwurfwaffe, Heft a, März 1941 26 Seiten

which can be found here: Luftwaffe Cockpits (under "M", Manuals, Messerschmitt Factory)

I also found there this picture of the bomb control panel that was mounted in 109 Jabos. I understand the fuzing on the left, but does the right allow selection or are those just indicator lights?



http://www.cockpitinstrumente.de/ins...s/Fl.52869.gif
http://www.cockpitinstrumente.de/ins...Fl.52869-1.gif