Shared Account Location Issues

Hi, we've bought a Ring3 doorbell along with a Chime. My girfriend set up the doorbell but struggled with the chime. She added me as a shared user, but when I was setting up an account, it seems that we have ended up with 2 locations, one a shared address & one that presumably is the address I set up (both are at the same address).When I add the Chime, it added it automatically to 'my address' rather than the shared one, so I end up with a doorbell on one & a chime on the other.I've removed the device & deleted the location so all I now have is the shared one, but now when I try to add the Chime, it asks me to set up my first location. So is it the case that only the Owner can add another device? Thanks