Is it possible to edit the value displayed for the Activity Status Indicator in a Chat workspace?

Environment:

Chat - Agent Console, Message Bases

Resolution:

The message that displays by default is similar to "Enduser is typing".  

This messaging is made from the following three Message Bases:
END_USER_LBL  
PL_0_IS_1_LBL
TYPING_LBL

For information on editing message bases, please see Answer ID 5498: Message Base search functionality in newer releases.