Is this a page you've developed yourself and have access to the HTML?   Will adding a 'required' attribute to the input work?   https://www.w3schools.com/tags/att_input_required.asp ... View more

The Meraki dashboard doesn't natively support this for the entire organization.   You can use the Dashboard API to develop a script to retrieve the information on your own, by iterating over the networks and retrieving all historical client data.     We're releasing a dashboard interface next week which does this directly using Meraki API's if you'd prefer to skip the coding:   https://share.getcloudapp.com/KouWmeyR   Ping me if you'd like to give it a trial run ... View more