how to show only selected extra fields in k2 "Item view options in category listings". I have only possibility to hide or show extra fields.
When I click on one main category it will list all items from this category and all extra field values for each item (imagine that I have 10 extra fields for each item).
I want that k2 catalog show only selected extra fields like for example only 3 selected extra fields in "Item view options in category listings".

And when I open Item then it should list all extra fields.
Is it possible?

It is possible if you override the category_item.php file and manually render each extrafield.

More info on overrides can be found here: getk2.org/documentation/tutorials/174

This blog post contains info on how to render directly specific extrafields.
getk2.org/blog/1068-k2-v262-now-available