miseno

Thanks a lot for help and time apljdi (and MichaelH). Hope i will find some solution or another posibility to do what i want ??

exactly, post author must select from both at east one before publishing. I dont want to know what that means for search :)))

For example I want to have category

Class
– Languages
– Math
– …

and another independent category

School
– High school
– University
– …

author must select one from Class and one form School. Thanks