The New UX there is a shift away from the terms Assignment and Assignee. The team member column (the resource on the classic assignments page) defines the team members and shows team members as part of the task. (The Team Member documentation does not specifically mention this.)
https://docops.ca.com/ca-ppm/15-5-1/en/using/getting-started-with-the-ca-ppm-new-user-experience/new-user-experience-compare-with-classic-ca-ppm#NewUserExperience:ComparewithClassicCAPPM-TeamMember
Customer has ability to submit enhancement request for Product Management to review the improvement idea...
Submit EQR.