How to make preferences mandatory Home › Forums › Newsletter Plugin Support › How to make preferences mandatory This topic has 0 replies, 1 voice, and was last updated 7 years, 5 months ago by pikks. Viewing 1 post (of 1 total) Author Posts January 5, 2016 at 12:02 pm #19843 pikksParticipant Hello, I’ve created a language preference: <!– preferences –> <tr> <th>Preferred language</th> <td> <input type="checkbox" name="nl[]" value="1"/> English<br /> <input type="checkbox" name="nl[]" value="2"/> Polski<br /> </td> </tr> How can I make it mandatory to choose at least one of the two preferences? Author Posts Check out our premium plans with priority support. Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In