Changes based on feedback; added it to update instructions

Author: ralf401

install/elasticsearch.rst

@@ -289,7 +289,7 @@ Build/rebuild the searchindex
         not be shown in search results.
       - Consider specifying a number of CPU cores to be used for the rebuild
         (see example below).
-      - If you just want to add a missing index, use the third command below.
+      - If you just want to add a missing index, you find the commands below too.
 
    Without specifying CPU cores:
 
@@ -303,13 +303,18 @@ Build/rebuild the searchindex
 
       $ sudo zammad run rake zammad:searchindex:rebuild[8]
 
-   Add a specific index with the command below. Replace ``Ticket`` with the one
-   you want to add. If your database already holds data which has to be indexed,
-   additionally use the second command:
+   Add a specific index with the following command. Replace ``Ticket`` with the
+   one you want to add:
 
    .. code-block:: sh
 
       $ zammad run rails r "SearchIndexBackend.create_object_index('Ticket')"
+
+   To index already existing data for this specific index, execute a reload of
+   this index, replace ``Ticket`` here as well:
+
+   .. code-block:: sh
+
       $ zammad run rails r "Ticket.search_index_reload"
 
 Optional settings

install/update.rst

@@ -112,6 +112,21 @@ using `Zammad hosting`_ for your and your customers' safety.
             # rebuilding the searchindex, as in the following example with 8 cores:
             $ zammad run rake zammad:searchindex:rebuild[8]
 
+         Add only a specific index with the following command. This is not
+         needed if you already run a complete rebuild of the index. Replace
+         ``Ticket`` with the one you want to add:
+
+         .. code-block:: sh
+
+            $ zammad run rails r "SearchIndexBackend.create_object_index('Ticket')"
+
+         To index already existing data for this specific index, execute a
+         reload of this index, replace ``Ticket`` here as well:
+
+         .. code-block:: sh
+
+            $ zammad run rails r "Ticket.search_index_reload"
+
       Step 7: Log into Zammad
          Yes, that's it!