RotoPaint - Nuke 101: Professional Compositing and Visual Effects - page 294

At the bottom of the Dope Sheet window there is a Move button and next to it a
field ( FIGURE 6.75 ) . You can use this button to change the location of keyframes
without needing to drag.
Figure 6.75. The Move button.
18. Enter 5 in the field.
19. Click the Move button twice to move all the keyframes selected by 10 frames
( FIGURE 6.76 ) .
Figure 6.76. Moving all the selected keyframes by 10 frames.