You should use this widget on the single post or other post type pages.
There is not much to configure with the Single Page Paging widget.
If you want to use the default WordPress paging behavior select “Use WordPress default”.
If you have configured an archive page with the Archive widget and want paging to inherit those settings choose “Use archive page query” in the method drop down.
You can style most of the various paging parts.
Split button and title text will make it so that the the previous and next links are on there own row. See example below.
Example with Split button and title text set as “Yes”
Example with Split button and title text set as “No”