Sharing vault with another, existing 1Password user
I have a family account that I share with my wife and two kids. I convinced my sister to buy her own account, and she has a personal account. My sister and I need to share a vault that contains information about our aging parents. I can invite my system as a guest by email, but your invitation appears to try to set up a new account for sister. She doesn't want a new or different account; she wants to keep her account and all her vaults, but we want to be able to share a between brother and sister.
How do I do this?
