Multiple Choice - set required selection (Survey tool)

We wanted to use the survey tool to conduct a PB vote. In our PB process, a person must vote for 5 projects - no more and no less. If they do not use all of their allocated votes, then their vote will be invalid. Whilst we can the limit the number of choices a participant makes, we cannot compel people to select a set amount of choices.

Our previous consultation platform and survey monkey both have this functionality E.g. we can set a specific number of responses required to a check box question and if you have less or more its flagged up as an error and it won’t let you submit your response.

Adding a new validation rule would enable us to set both a maximum and minimum choice requirement.