Greetings, @LoriC2!
Welcome to the Roku Community! Thank you for posting about adding chimes to your Roku Smart Home Doorbell. We're happy to provide you assistance.
Please note that it is only possible to use one chime per doorbell. Additional chimes cannot be added to a single doorbell.
We hope this clears things up. If you have any further questions, please feel free to ask in the Roku Community.
Best regards,
Jess
Jessica G.
Roku Community Moderator