Decided to add a family supplementary member on each of the BA, SPG and Gold cards to share 4square benefits. It seems 3 different processes:

BA - Simple, done online, said card within 4 business days, see card on web account.

Gold - Done online, stated subject to review, phone call from Amex stated forms to follow....

SPG - Not done yet, says have to call.

Why does each card have a different process? Is it normal to have to make an online and paper request for Gold MR card? Is the SPG one simple over the phone?

Thanks

PS - feel free to merge into thread/move to Amex although not strictly an MR query.