@Wilberto, the last post in this topic is over one year ago. Check the following out if you are talking about hiding empty extra fields. A search for "hide empty extra fields" would find the following post.

 

community.getk2.org/forum/topics/hide-extra-field-if-value-is-1?commentId=3536014%3AComment%3A161541&xg_source=activityWilberto Crespo said:

hi! could you resolve this problem. I have the same issue.

Yes, there is no central documentation for K2.

But see it this way also......Practically there is no (very minor) web design company in Europe that would make you a website under 700 €.
So, it is not so big deal to pay 5-10 € for some commercial plugin licence you need.

Do what i do. Find all extensions and plugins at warez sites. Test them localy, tweak them to see if they suit you.
Then if you need it just buy licence befor you go "live".

I would never buy a licence for some script before i can test it.

Some thoughts, not relative to question in thread.

I know this is old but for anyone searching these forums, you can find a tutorial on hiding extra empty fields at: toxzen.co.za/webdevoloper/item/34-hide-empty-k2-extra-fields-in-joomla

It's literally 2 lines of code you can add.