I find it very difficult to easily assign issues to my different users. It looks like I should be able to drag and drop my issues to different users in work mode if I order the swimlanes by Assignee but this doesn't appear to work. What am I doing wrong? Also, is there a way to change assignee in plan mode on the detail screen? Right now I have to go to the ... menu and Assign, I'd like to make the Assignee field ediable on the detail screen.