Use the Parameters selection level to access the PRS Parameters rollout which provides tools for creating and deleting keys. PRS stands for the three basic transform controllers: Position, Rotation, and Scale.
Procedures
To create a PRS transform key:
-
Select an object in the viewports.
- Drag the time slider to the frame where you want to place a key.
- On the
Motion panel, choose Parameters 
PRS Parameters rollout.
- Click one of the following buttons under Create Key PRS Parameters rollout:
- Click Position to create a Position key.
- Click Rotation to create a Rotation key.
- Click Scale to create a Scale key.
If a particular Position, Rotation, or Scale controller doesn't use keys, then that button is not available under Create Key. For example, you can’t create Position keys if you're using a Noise Position controller.
Interface
Create Key and Delete Key groups
Creates or deletes a move, rotate, or scale key at the current frame. These buttons become active or inactive depending on the existence of a key type at the current frame.
For example, if you're on a frame containing a Scale key, the Scale button is inactive in the Create column because a key already exists. At the same time, the Position and Rotation buttons are inactive in the Delete column because there are no keys of that type to delete.
- Position/Rotation/Scale
- Determines the contents of the Key Info rollouts that appear below the PRS Parameters rollout on the Motion panel.