Use Box Selection to select multiple keys while viewing the Animation window in Dopesheet mode. Use Box Selection to select and manipulate many keys at once.
Perform the following actions to select multiple keys: * Hold Shift and click to add individual keys to your selection. * Drag a rectangle with the mouse to select a group of keys. * Hold Shift and drag a rectangle to add/remove keys to/from the Box Selection.
As you add keys to the selection, Box Selection handles appear on either side of the selected keys. If you add keys or remove keys, the Box Selection handles automatically adjust their position and size to surround the selected keys.
Use the Box Selection handles to move, scale, and ripple edit the selected keys (consult Ripple edit, below).
Click and drag anywhere within the Box Selection to move the selected keys. You do not need to click directly on a key; you can click any empty space between the Box Selection handles.
As you drag the selection of keys, the time of the first and last key displays to help you position the Box Selection. If you drag the selection of keys to the left, keys that are in negative time (to the left of 0) are deleted when you release the mouse button.
When you have multiple keys selected, you can Scale the selected keys. For example, you can increase the distance between the selected keys which slows down the animation. You can also decrease the distance between the selected keys which speeds up the animation. To scale the selected keys, click a Box Selection handle to the left or right of the selected keys, and drag horizontally.
As you scale the selected keys, the time of the first and last key displays to help you scale your animation. While scaling, some keys might end up on the same frame as each other. If this happens, the extra keys that occupy the same frame are discarded when you release the mouse button. In this case, the last key is kept.
A ripple edit is a method of either moving or scaling the keys in a Box Selection. A ripple edit also affects the unselected keys for the same properties as the selected keys. How the unselected keys are affected depends on whether the ripple edit is a ripple move or a ripple scale: