I have given up on knowing everything vegas can do. But the users here many of which I also run into on the creative cow board seem to teach me something I didn't know every week. But this one I did know as color curves is my preferred plugin for bright/contrast/color grading. But I've only used vegas for 15 years, you need to get good widetrack.
In ANY Control with KFs. Add 6 KFs. Rt-Mse+Drag across them so that they're selected. Hold down the ALT and Drag that last KF! They'll start to separate themselves proportionately across the Timeline. Value? You've setup a 5 sec Event but now you want to double (or anything) its length, you now have ALL the KFs clubbed together at one end . . . but now this ALT Drag will spread them. 😎