Ion the keyboard to set Start frame
Oon the keyboard to set End frame.
Shift+ Left click to select keyframes (yellow = selected).
Ctrl+ Left click to deselect 2. Click on the yellow box highlight and drag.
TipThe red lines on the timeline functions similarly to a ‘dopesheet’. Moving the red lines equates to moving the keys of all the selected nodes at those frames. The closer the red lines are to each other, the faster the animation. The more spread out the red lines are, the slower the animation.
TipIf you would like to move the keys of all the selected nodes at once, adjusting the red lines would be the fastest way to do so (instead of adjusting the keyframes from the graph editor for every curve).
Shift+ drag to select markers and click + drag on the blue arrow to scale/move keyframe markers.
Ctrl / Shift+ Left Click on Windows,
Cmd/ Shift+ Left Click on Mac Right click to Deselect keyframes