ProctorU is a service used to authenticate a user’s identity and provide live proctoring of online assessments. Test-takers use ProctorU’s Guardian Browser, which enhances exam security by preventing the user from accessing unauthorized resources and functions on their computer. ProctorU uses a multi-step process to establish a user’s identity: a live proctor sees the user via a webcam, takes the user's photo, and checks the user’s ID. In addition to the authentication process, proctors ensure the integrity of the exam by using a webcam and screen-sharing technology to see the user and what they are doing during the exam session. This article is a guide for instructors implementing ProctorU in their course.