You've enabled the new List View...but you still want to do use mass actions.
1. Using the Bulk Edit Button:
2. Using cmd/CTRL option:
- While in List View; hold cmd (Mac) or Ctrl (Windows) while hovering over a task, then click the space on the left of the assignee icon.
- That task is now selected and will show a white tick icon where the assignee icon was. You can continue to select other tasks as needed.
See the example below. Any questions, comment and we'll be happy to help: