skip name attribute for groups in wms capabilities document

docs/server_manual/getting_started.rst

@@ -906,6 +906,14 @@ Check the |checkbox| :guilabel:`Add layer groups in GetLegendGraphic` option
 if you want to also insert the layer groups (and subgroups) names
 into the layer tree, just like in QGIS Desktop legend.
 
+When QGIS project contains layer groups, they are listed in WMS capabilities document alongside with layers.
+If a group (its name as listed in capabilities) is included in WMS GetMap ``LAYERS`` parameter
+alongside with names of layers in that group, QGIS would duplicate the layers:
+once for the group and once for specific layer.
+Check the |checkbox| :guilabel:`Skip name attribute for groups` option
+to avoid the duplication: group names are not returned in GetCapabilities
+and only the leaf layers can be requested in GetMap.
+
 You can also use the :guilabel:`GetFeatureInfo geometry precision` option to
 set the precision of the GetFeatureInfo geometry. This enables you to save
 bandwidth when you don't need the full precision.