I have a multi choice question with 20 options and the user is allowed to select a maximum of 3 answers.
I know I can set the maximum number of answers in the logic section but what my client would like to do is effectively disable all other checkboxes once 3 choices have been made.
If they uncheck the 3rd checkbox then the options would need to be re-enabled.

I'm sure this is possible with a Javascript solution but that's above my pay grade!