I just purchased the 2020 software over the internet for a new business I am starting. I set up the username as my e-mail for one of my other businesses until I get a domain name registered and an e-mail address for my General Manager. I now have the new business domain & e-mail address and would like to change the Username to the General Manager’s e-mail address as he will be the one using the software, not me. I do not see where you can change the username in the system?