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Hello @tsubakuma
The plugin does not include a specific feature for this case, but you can emulate it from the form.
I’ll assume there are three dropdown fields in the form: fieldname1, fieldname2, and fieldname3. You can insert an “HTML Content” field in the form with the following piece of code as its content:
<script>
jQuery(document).on('change', '[id*="fieldname1_"], [id*="fieldname2_"], [id*="fieldname3_"]', function(){
let e = jQuery(this), v = e.val();
jQuery('[id*="fieldname1_"], [id*="fieldname2_"], [id*="fieldname3_"]').each(function(){ if(this != e[0]) jQuery('option[value="'+v+'"]', this).prop('disabled', true);});
});
</script>Note it is a simple example of the process. If you need a more complex process with other validations or removing the items from the list instead of deactivating them, you can request a custom coding service directly on the plugin’s website: contact us
Best regards.