[the_other_guy]

plugin.library.node.editor makes it easy  to make  programmable widgets
AppData\Roaming\Kodi\userdata\library\video is the file path
you can make a folder with nodes

node.name will give you Categories type view 
node.name.xml will give you Poster Square Episodes view

xml:


   <!-- ROW1 -->

              

                            

                            <include content="WidgetListSquare" condition="!Skin.HasSetting(movies-row1) + Skin.HasSetting(movies-WidgetList-row1)+ !Skin.HasSetting(movieswidget_1_Categories_Square)">

                            <param name="content_path" value="library://video/widgets/movies/row1/"/>

                            <param name="widget_header" value="row1"/>

                            <param name="widget_target" value="videos"/>

                            <param name="list_id" value="5100"/>

                            <visible>!Skin.HasSetting(movies-row1)</visible>

                            </include>    

                            

                            <include content="WidgetListPoster" condition="!Skin.HasSetting(movies-row1) + !Skin.HasSetting(movies-WidgetList-row1) + !Skin.HasSetting(movieswidget1_Poster)">

                            <param name="content_path" value="library://video/widgets/movies/row1/row1.xml"/>

                            <param name="widget_header" value="row1"/>

                            <param name="widget_target" value="videos"/>

                            <param name="list_id" value="5100"/>

                            <visible>!Skin.HasSetting(movies-row1)</visible>

                            </include>