MIDI Event list; you can Insert a Control Change for controller #7 (volume change) at the beginning of song, or anywhere in song to change the volume of the MIDI channel send.

It is the 'E' icon at top, or highlite MIDI track and hit F2.
Remember though, that once set, the synth remembers the new volume setting until you tell it to change again.

0 = volume off
127 = volume max
make sure Control Change is on correct MIDI channel (usually 10 for drums)

So-
Insert
Control Change
MIDI Channel = 10
Control Change = #7
Parameter = 0 thru 127

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