Since you have Vegasaur, it's quite easy. Go to quick properties and select the events tab. You make your adjustments using the Take Offset and Length checkboxes. Set 1 sec in your offset, adjust length, and then under length select 1 sec and also select Decrease in the rightmost Dropdown box. Then apply to your selected event.
It's really worth learning to use all of the many features of Vegasaur--especially, since you've already paid for it.