The article provides links to BetAmerica's support pages addressing whether users can have multiple accounts, if friends can use their account, and if accounts can be accessed from locations other than their own computer, such as work.
Can I have more than one account?
https://support.betamerica.com/hc/en-us/articles/23948817584013-Can-I-have-more-than-one-account
Can my friends use my account?
https://support.betamerica.com/hc/en-us/articles/23949022789517-Can-my-friends-use-my-account
May I access my account from someplace other than my own computer? (e.g., work.)