Building upon the existing OLL (Oxford Learning Link) video player, I was responsible for implementing functionality that enables the integration of OLL resources across various content formats (such as gradable quizzes and interactive activities) at specific video timestamps. This feature was incorporated into our current CMS, allowing OUP editors to efficiently develop video-based activities for inclusion in courses and textbooks. During video playback, students encounter interactive content presented in modals, which they complete as the video progresses. Upon completion, the corresponding grades are automatically submitted to their LMS grade book.