Mary had to get her son a computer for school and she put herself in as the admin. Leo says that's a very good idea. She can use herself as the admin and her kid as a limited user. There's also a new feature in Windows 10 which would allow her to give them a pin code to install things without having her type in the password.
Does she need MacAfee for her Antivirus? Leo says no. She should take it off. Windows 10 has its own antivirus which is quite good if she keeps it updated.