In "Why doesn't C-c a call the agenda? Why don't some org keybindings work?", we can see

#+BEGIN_SRC emacs-lisp ;; The following lines are always needed. Choose your own keys. (add-to-list 'auto-mode-alist '("\\.org\\'" . org-mode)) (global-set-key "\C-cl" 'org-store-link) (global-set-key "\C-ca" 'org-agenda) (global-set-key "\C-cb" 'org-iswitchb) #+END_SRC emacs-lisp