I have installed the https://themes.muffingroup.com/be/cityhall/ demo page ... so in a single post page I cant activate the right sidebar ???
sorry here the page: https://www.associazioneitaliahongkong.org/app/quisque-lorem-tortor-fringilla-sed/
You can have a sidebar on the right in the single posts.
Please, check the following links about the sidebars:
If something will stay unclear, please, let me know.
thanks a lot .. solved!