I use following config, but does not work. How can I manage those popup buffers with display-buffer-alist?

(add-to-list 'display-buffer-alist
             '("^\\*Org Agenda\\*" (display-buffer-same-window)))

(add-to-list 'display-buffer-alist
             '("^\\*Clock Task Select\\*" (display-buffer-below-selected)))