How do I automatically split transactions from multiple cardholders on the same AmEx account

Question

I have an american express card, and I have given cards to multiple family members. Is there a way to assign charges to them? Ideally automatically. I would also like to keep track of their spending such that I can make sure they are paying their charges, but not have their spending reflect on my own totals. 
 Thank you for any suggestions

jtemplin · Answer

Longtime AMEX user here. Please see my response to this:
https://community.quicken.com/discussion/7923575/american-express-mixing-charges-from-separate-cards#latest

NotACPA · Answer

Do the various cards all have the same account number ... or different?The American Airline cards that my wife and I have are one account, one bill (subtotaled by card), one download into Q ... but two different card numbers.

Ps56k2 · Answer

It all really comes down to how the AmEx data is downloading, and if AmEx actually includes ANYTHING in the downloaded transaction that would identify which "cardholder" has the charge.... if not - 
As mentioned, above, you could manually add a TAG to each transaction, but that would require you knowing who did what - maybe the AmEx statement breaks out the charges by each card -