Select a palm or ankle bone. > Modify panel > Palm/Ankle Setup rollout > Set Num Digits to a non-zero value. > Select a digit bone.
You can edit digits at the digit level as well as at the level of each bone in a digit.
Access the Digit Setup rollout by selecting a digit bone in the viewport. These settings affect the entire digit to which the bone belongs.
The name of the digit. See Using 3ds Max CAT's Naming System
Buttons for copying and pasting the digit settings to or from other digits. See Copying and Pasting Rig Parts.
This rollout has the settings for the selected digit bone.
The name of the digit bone. See Using 3ds Max CAT's Naming System
Toggles the custom mesh for this digit bone. See Customizing the Geometry on CATBones.
Adds an extra bone to the digit bone.
Adds special rigging objects, such as props, to the digit bone. For details, see To add rigging objects:.