You can quickly add the channels (attributes) of any object to a character set. The object need not already be part of the character set.

To add channels to the current character set

1. Make sure the character set you want to add the channels to is the current character set.
2. Select the objects some or all of whose channels you want to add to the character set.
3. In the Channel Box, select the channels you want to add to the character set.
4. Select Character > Add to Character Set.

You can move an attribute from one character set to another. You can similarly add to a character set any numeric attribute that’s not currently in a character set.

To add channels to a character set using drag-and-drop in the Outliner

1. In the Outliner, display the attribute and the destination character set.
2. -drag and drop the attribute on the character set.