Show more op-irregular-openings?

Hi @francescag,
this is currently not possible with native shortcode / widget options. However you can use the plugin API to access the irregular openings and interact with them programatically. An integration to the plugin core is currently out of scope. Please refer to the developer guide: https://github.com/janizde/WP-Opening-Hours/blob/master/doc/developer-guide.md

Hope this helps