Setting up 2FA can provide extra security during the log in process for all users on the account. When enabled, all users on this account will be prompted to set up 2-factor authentication the next time they log in.
Please note this can only be set from the account of the owner. If the owner's account has 2FA on, it will be on for all users. If the owner's account has 2FA off, it will be off for all users.
The option can be found be going to: My Account > Admin Console > Security.