Add more info for schleuder subscription management

service/schleuder.md

@@ -78,10 +78,24 @@ To export a list public key you can do the following:
 
 ### Subscriptions management
 
-Subscription are managed with the subscriptions command. To subscribe a new user to a list do:
+Subscription are managed with the subscriptions command.
+
+To subscribe a new user to a list do:
 
     schleuder-cli subscriptions new secret-team@lists.torproject.org person@torproject.org <fingerprint> /path/to/public.key
 
+To list current list subscribers:
+
+    schleuder-cli subscriptions list secret-team@lists.torproject.org
+
+To designate (or undesignate) a list admin:
+
+    schleuder-cli subscriptions set secret-team@lists.torproject.org person@torproject.org admin true
+
+Lists can also be administered via email commands sent to `secret-team-request@lists.torproject.org` (list name followed by `-request`).
+
+Available commands are described in the [Schleuder documentation for list-admins](https://schleuder.org/schleuder/docs/list-admins.html).
+
 ### Other commands
 
 All the other commands are available by typing: