You only get 2 with the savings membership. In order to get more you would have to have a business membership, which you can convert a savings into. That membership would get you a company card and two people on the account. Then you could add an additional addon for a fee in which you could add someone underneath them for free.
2, you can purchase more as you need.
Two
At least 2
Two. You can get more for an additional fee
I also say 2
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