diff --git a/repl-sessions/db.clj b/repl-sessions/db.clj
index c9279f9..0330e09 100644
--- a/repl-sessions/db.clj
+++ b/repl-sessions/db.clj
@@ -14,12 +14,29 @@
  (db/transact [[:db/retractEntity 17592186045468]]))
 (user/conn)
 
+(db/transact  [{:user/email "aa@gmail.com"
+                :user/handle "laurence.chen"
+                :user/name "Laurence"}])
+
+(db/q
+ '[:find
+   [(pull ?e [*]) ...]
+   :where
+   [?e :user/email]]
+ (db/db))
+
+(def session-eid 17592186045438)
+
+(db/transact [{:db/id session-eid
+               :session/participants  17592186045458}])
+
+(first (:session/participants (db/entity session-eid)))
 ;; Test transact participants
 
 (def req {:identity {:user/email "ddd"}
-          :path-params {:id "17592186045455"}})
+          :path-params {:id "17592186045438"}})
 
-(def session-eid 17592186045455)
+(def session-eid 17592186045438)
 
 @(db/transact [[:db/add session-eid :session/capacity 14]
                [:db/add session-eid :session/signup 0]])
diff --git a/src/co/gaiwan/compass/html/sessions.clj b/src/co/gaiwan/compass/html/sessions.clj
index 1f2958a..1e93c09 100644
--- a/src/co/gaiwan/compass/html/sessions.clj
+++ b/src/co/gaiwan/compass/html/sessions.clj
@@ -64,7 +64,7 @@
               :hx-select (str "." session-card)
               :hx-swap "outerHTML"
               :on-click "event.stopPropagation()"
-              :hx-indicator (str ".c" (:db/id session)) }
+              :hx-indicator (str ".c" (:db/id session))}
      (if (session/participating? session user)
        "Leave"
        "Participate")]
@@ -130,8 +130,9 @@
      #_[:p.host "Organized by " organized]]]))
 
 (o/defstyled attendee :li
-  ([{:user/keys [name email handle uuid]}]
-   handle))
+  ([{:db/keys [id]}]
+   (let [{:user/keys [name]} (session/attendee id)]
+     name)))
 
 (o/defstyled session-detail :div
   [capacity-gauge :w-100px]
@@ -163,14 +164,13 @@
       [:div "Location "]
       [:div (:location/name location)]]
      [:div.capacity
-      [:div "Location capacity:"]
-      [:div capacity]]
-     [:div.signup-count
-      [:div "Current Signup:"]
-      [:div signup-count]]
-     [:div.participants
-      [:div "Participants:"]
-      [:ol (map attendee participants)]]
+      [:div "Spots available:"]
+      [:div (- (or capacity 0) (or signup-count 0))]]
+     (when (session/organizing? organized user)
+      ;; Only show the participants' list to organizer.
+       [:div.participants
+        [:div "Participants:"]
+        [:ol (map attendee participants)]])
      (when (:session/ticket-required? session)
        [:p "Required Ticket"])
      [:div.actions
@@ -184,6 +184,7 @@
        "Leave"]
       [:button "Edit"]]
      #_[:p.host "Organized by " organized]
+     #_[:p (pr-str user)]
      #_[:p (pr-str session)]]]))
 
 (o/defstyled session-list :section#sessions
diff --git a/src/co/gaiwan/compass/model/session.clj b/src/co/gaiwan/compass/model/session.clj
index 645bfd6..d12f307 100644
--- a/src/co/gaiwan/compass/model/session.clj
+++ b/src/co/gaiwan/compass/model/session.clj
@@ -1,5 +1,15 @@
-(ns co.gaiwan.compass.model.session)
+(ns co.gaiwan.compass.model.session
+  (:require
+   [co.gaiwan.compass.db :as db]))
 
 (defn participating? [session user]
   (some (comp #{(:db/id user)} :db/id)
         (:session/participants session)))
+
+(defn organizing? [organized user]
+  (and
+   (some? organized)
+   (= (:db/id user) (:db/id organized))))
+
+(defn attendee [id]
+  (db/entity id))