1Password Family Membership: - how can subscription be paid by a co organiser? Note:- this is Family Membership within the 1Password app, not Family Sharing as used by Apple.

1. I have a trial Family Membership - which, at the moment - is directly with 1password.com and I am the main “Organiser” and as such have given details of my debit card to enable the subscription to be paid at the end of the trial if I wish to continue.
2. I have also set up a family member (my daughter) to be a “Co Organiser" and thus have the same privileges and access as I do other than to our respective individual private vaults. She is in the Apple system and obviously has a different Apple ID (and password) to me - which is of no relevance at this stage (but will be later!).
3. In the event of my demise, my daughter will take over payment of the subscription and will identify her card via the account at 1password.com as being the revised source of payment for the subscription. Apple are not involved.
4. How could such an arrangement with a potentially smooth transition from one subscriber to another occur if I subscribed to the 1Password app via the App Store? My daughter has a different Apple ID, as I stated earlier, so any approach by her to the App Store would be through her own credentials, not mine.
5. Please note that Family Sharing, although available for this app, is unlikely to be a viable alternative. I do not wish to share my other app purchases with my family members - only this one - and I certainly don't agree to paying the cost of any purchases they may make in the future! I do realise that I can stipulate from the outset that I will not pay for their purchases. I also realise that content can be hidden rather than shared but all family members would have to carry out a sifting process to keep their apps to themselves; what a pain!! Plus, my daughter is required to spend lengthy periods abroad and there may be complications with subsequent dealings with the UK App Store where the app was obtained.

Thanks for taking the time to read this and I look forward to your advice.