Hello Victor, thank you for your answer.
For full enrollment, profile and agent need to be installed. The profile can't be connected to work or school with the regular user, because it mandatory need the administrator.
So we tried to connect the pc using the admin account and then log in as the regular user and try to execute the agent installer with elevated privileges but it doesn't work anyway.
A case is opened with support but they say is a BUG and they are trying to see if there's a workaround.