Tony, thank you for your support!
it's not exactly what i need!
I openend some categories as art of sport. I opened the categories Running, Ski, Motocross, Cycling and Equestre Show Jumping etc.
The event manager can now open a Running-, Motocross, Cycling, Ski or Equestre-Event.
What i like to have is: the manager open a event and select the art of sport. then he can open several runs with a button "Add new run"
when he selected the art of sport = Running, then he can open runs with the criteria like: age, gender, lengt of run etc.
when he selected the art of sport = Motocross, then he can open runs with the criteria like: age, gender, force of engine, team etc.
when he selected the art of sport = Showjumping, then he can open runs with the criteria like: age, age of horse, gender of horse, Cup points, team etc.
each run have also max. of atandees and the price.
a other example:
the event manager can open a event with categories: Computer, Travelling, Langagues etc
then the event manager can open "Add new Course"
when he select category = Computer, then he can open a course with the criteria like: art of computer course, age, price, etc.
when he select category = Traveling, then he can open a course with the criteria like: Continent, age, gender, only for Africans, price, etc.
when he select category = Langague, then he can open a course with the criteria like: Langague, age, gender, level, price etc.
I hope to be more clear now and hope of your solution
in advance thank you very much for helping me!
Chris