Briefcase Elementor Widgets allow you to create and activate an Ajax add to cart option on the custom single product page, also you can enable the option to open the menu cart automatically after add cart is finish. This feature works great for single and variation products.
- Open your single product template.
- Select the add to cart dynamic field.
- Enable Ajax Add to Cart on add to cart dynamic field settings.
- Enable Open Menu Cart on Ajax.
- Save the template.
Check this video tutorial with all the steps.