Answer Description

Best practices dictate that administrators should have a secondary account with administrator privileges, separate from their main user account. This leads to improved security due to maintaining separation of duties and minimizes damage done if user accounts are compromised.

Wikipedia

Separation of duties (SoD), also known as segregation of duties is the concept of having more than one person required to complete a task. It is an administrative control used by organisations to prevent fraud, sabotage, theft, misuse of information, and other security compromises. In the political realm, it is known as the separation of powers, as can be seen in democracies where the government is separated into three independent branches: a legislature, an executive, and a judiciary.