A knowledge base article about As a student, how do I submit my work to Turnitin if my instructor requires me to use it? provided by the UC Berkeley IT Service Hub - Knowledge Portal
All Turnitin student submissions take place in the bCourses learning management system, using Assignments. Students see additional notifications that an assignment has been Turnitin-enabled when submitting their work, and will check a box indicating their acknowledgement that the instructor is using Turnitin.
More information on submitting a Turnitin-enabled Assignment can be found on Turnitin Help: Submitting to an assignment