Chime and homebase together?


Hope someone can help, I use my homebase 2 as the main notifier for my doorbell, but I was hoping to use the chime unit that came with the doorbell as a secondary notifier in an outhouse… I can’t seem to make the chime link or chime… It’s installed fine, but under settings in the doorbell it only give ‘homebase as chime’ on or off… Nothing else…

Any advice would w great!