(DOCSP-14432)(DOCSP-14431): Pin/unpin Group & Row Total columns (#468)

* (DOCSP-14432)(DOCSP-14431): Pin/unpin Group & Row Total columns

* Copy review

Author: melissamahoney-mongodb

source/chart-type-reference/data-table.txt

@@ -108,13 +108,36 @@ Wrap Text
 ~~~~~~~~~
 
 You can wrap text that does fit in a single data cell across multiple 
-lines.. This setting is off by default. To turn it on:
+lines. This setting is off by default. To turn it on:
 
 1. Select the :guilabel:`Customize` tab of the Chart Builder.
 #. Expand the :guilabel:`Fields` section.
 #. Select your desired field from the dropdown menu.
 #. Toggle the :guilabel:`Wrap Text` switch to enable this feature.
 
+.. _pin-columns:
+
+Pin Columns
+~~~~~~~~~~~
+
+You can pin :guilabel:`Group` and :guilabel:`Row Total` columns to the
+side of the data table. A pinned column remains fixed in place while the
+rest of the table scrolls. 
+
+To pin a column, hover over the column you want to pin and click the
+:icon-fa5:`map-pin` button in the column header. The :icon-fa5:`map-pin`
+button toggles on and the column pins to the side of the data table: 
+
+- A :guilabel:`Group` column pins to the left of any unpinned
+  columns.
+- The :guilabel:`Row Total` column pins to the right of any
+  unpinned columns.
+
+To unpin a column, click the :icon-fa5:`map-pin` button in the header of
+the column you want to unpin. The :icon-fa5:`map-pin` button toggles off
+and if the column is a :guilabel:`Group` column, it moves to the right
+of any pinned :guilabel:`Group` columns.
+
 Examples
 --------
 

source/chart-type-reference/data-table/reorder-columns.txt

@@ -19,10 +19,21 @@ Builder </build-charts>`.
 Behavior
 --------
 
-When a user reorders data table columns and saves the
+When you reorder data table columns and save the
 chart, |charts| saves the specified order as part of the chart
 definition. All |charts-short| users will see the new column order.
 
+Pinned Columns
+~~~~~~~~~~~~~~
+
+If you reorder a :guilabel:`Group` column in a data table that has 
+:ref:`pinned columns <pin-columns>`, the following behaviors apply:
+
+- If the column to the right of the destination is pinned, 
+  the reordered column is pinned. 
+- If the column to the left of the destination is unpinned,
+  the reordered column is unpinned.
+
 Procedure
 ---------