Alex, thank you for responding, but why did you post this? It doesn't seem to contain any useful information and really doesn't make sense. Also, "step 3" - which would be the important part, seems to be missing. Are you in the process of editing this? Here is what is in that post right now:

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This is instruction om how to create a field on join form with 'Not Specified' or 'Select it' as first element in drop down box.

It will ask user to select some value see more instead of some preselected value, which one user even not noticed.


1. create predefined list:

2. Create the following field on join form:


4. Test the result:

As you see - I can not submit a form without selecting this field - it gives me error message