This documentation is not using the current rendering mechanism and will be deleted by December 31st, 2020. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.
The configuration settings can be done through the settings of a plugin. Because of using Extbase every setting can also be done by using TypoScript but remember that the not empty settings of the plugin always override the ones from TypoScript. For boolean settings you have an option in the extension manager to choose select boxes instead of checkboxes, which provides an option “from TypoScript” in boolean settings. Further information you can find in chapter Administration → Extension configuration.
The basic configuration to use this extension is already done within the default template. If you want to change certain settings e.g. on more than one page you can change them in your template.