Hello everyone. Normally, 2FA is carried out with the smartphone. This works quite well if only one person is working on the account. But we are an association and therefore at least two people need access, namely the president and the treasurer. However, they are not always in the same place or working on the accounts at the same time. So at least 2 phones must be authorised for 2FA. 

Is that possible?

Thanks for any advice.