how to edit sequencer staff?

Hello,
I am just wonder if it is any way to edit sequencer events? I sometimes use Garritan Orchestra Library where CC 1 is responsible for volume and after recording it I would like to edit it manually. Can I do it in Notion or I have to record it in real-time again?
Cheers,
piotr979
I am just wonder if it is any way to edit sequencer events? I sometimes use Garritan Orchestra Library where CC 1 is responsible for volume and after recording it I would like to edit it manually. Can I do it in Notion or I have to record it in real-time again?
Cheers,
piotr979