I'm trying to use Twig with Toolset.
What do I use to display a list of checkboxes that a user has selected? In the WP admin the post author can select a variety of checkboxes for a post. I want to display the value of the selected checkboxes on the front-end.
I can use {{post.get_field('wpcf-slug')}} to display a field value.
To display our Fields on the WordPress front end you will use our ShortCodes or the API:
https://toolset.com/documentation/customizing-sites-using-php/functions/
WordPress works with PHP files, so you would (if you use the API) edit as example the single.php template for single posts, or your Theme's single (custom) post template.
Those are not made with TWIG usually, but PHP.
Its not possible to access any PHP function inside Twig directly.
There are several entries on this topic in Stackoverflow.
https://stackoverflow.com/questions/18665923/call-php-function-from-twig-template.