I was asked the other day “how to change the labels on a character key set PPG”.

A Character Key Set PPG is a custom property and some proxy parameters. So you can edit the proxy parameter definition:

1. Open the character key set PPG.
2. Mark a parameter.
3. In the Animation panel, click Animation > Parameters > Edit Parameter Definition.
4. Change the name of the parameter and click Ok.

Tip: Character key sets are implemented in %XSI_HOME%\Application\DSScripts\CharacterKeySets.vbs.