Drag here to set start time doesn't work, also cannot drag from high impact tasks/roles to the timeline for the week

Unsure if this is a question or a bug, but I'm seeing in some of the youtube videos that you can drag a task from roles/high impact tasks to the time you want to do it on the timeline under week. But this isn't letting me do it. All it does is say anytime when I hold it over anywhere on the timeline. Am I missing something? I've tried chrome, safari, and firefox.