Sharepoint survey - Condition to multiple responses

I have a sharepoint survey in which the first question is of type choice, where you have to chose a开发者_开发百科 person. The survey allows multiple responses, and I was wondering if I could put a condition or restriction to that first question, so each person who responds can select a person from the list only in one response.

For instance I have as choice for the question "a" and "b". In my first response I choose "a", which will mean that if I want to respond again, I can only choose "b".

Does anyone know how I can do that?

---

What you want is called "cascading". You want cascading lookup/dropdown fields.

Problem is: Doesn't work out of the box. You will have to create your own survey page or use a Javascript solution.

You didn't state your Sharepoint version, but there is a company called KWiz and they offer a custom Sharepoint 2007 Survey webpart which offers what you would need I think: Survey Web Part - Survey Plus - besides that I can only think of custom solutions.

---

EDIT

Seems like I misunderstood. Different use case:

• Your Survey allows multiple answers
• Your respondent responds to the survey with A
• Second time around the respondent may only choose B, or C - A is not available anymore

This would either be possible with Javascript, by querying the list what the previous responses of the user were and based on that grey out / disable these. But I think it would be easier to do a custom Survey entry form for this. You just have to inherit from the default survey list template and create a custom survey list template - in that you can do what you want then.