org.el

(setq org-super-agenda-groups
      '(;; Each group has an implicit boolean OR operator between its selectors.
        (:name "Today"
               ;; Single arguments given alone
               :not(:tag "meetings" :tag "PROJECT"))
        (:name "Projects"
               ;; meetings
               :tag "PROJECT")
        (:name "Immediately"
               ;; single argument
               :priority "A")
        (:name "Meetings"
               ;; meetings
               :tag "meetings")
        ))