https://www.paradata.org.uk/article/...erley-aircraft
”.....In the parachuting role it carried 70 fully equipped parachutists, 30 jumping from an aperture in the Boom and 40 from the double doors either side of the Lower Deck. Aperture and door jumping could not however be done simultaneously......”
Video below, about 20 seconds in, seems to show film shot from the open clamshell doors of the paras dropping from the hatch above....