user docs: Update restrict-create-new-streams.

templates/zerver/help/configure-who-can-create-streams.md

@@ -0,0 +1,23 @@
+# Restrict stream creation
+
+{!admin-only.md!}
+
+By default, any user can create new streams. However, you can restrict stream creation to
+
+* **Organization administrators**, or
+* **Organization administrators, and anyone with an account at least `N` days old**,
+  for any `N`.
+
+For corporations and other entities with controlled access, we highly
+recommend keeping stream creation open. A typical Zulip organization with
+heavy use has as many streams as users.
+
+For large Zulips where anyone can join, we recommend restricting stream
+creation to those with accounts at least a few days old (we suggest starting
+with `N = 3`), to make it easier to cope with spammers and confused users.
+
+{settings_tab|organization-permissions}
+
+2. Under **Other permissions**, configure **Who can create streams**.
+
+{!save-changes.md!}

templates/zerver/help/include/sidebar.md

@@ -123,7 +123,7 @@
 * [GDPR Compliance](/help/gdpr-compliance)
 
 ## Organization settings
-* [Restrict stream creation](/help/only-allow-admins-to-create-new-streams-feature)
+* [Restrict stream creation](/help/configure-who-can-create-streams)
 * [Change who can add custom emoji](/help/only-allow-admins-to-add-emoji)
 * [Block image and link previews](/help/allow-image-link-previews)
 * [Restrict name and email changes](/help/restrict-name-and-email-changes)

templates/zerver/help/only-allow-admins-to-create-new-streams-feature.md

@@ -1,18 +0,0 @@
-# Only allow admins to create new streams
-
-{!admin-only.md!}
-
-By default, any user can create new streams. You can enable a setting that
-only allows administrators to create new streams in the organization.
-
-{settings_tab|organization-permissions}
-
-2. Select the **Prevent users from creating streams** checkbox under the
-**Streams & custom emoji** section.
-
-    !!! tip ""
-        Type a number in the **Waiting period for stream creation (in days)**
-        input to specify the period of time users must wait to create a new
-        stream.
-
-{!save-changes.md!}