Hey JHille-BearTech,
Typically feature requests should go through your Account Team or by clicking the "give your feedback" button in the bottom right hand corner of the Meraki dashboard. That being said, what you are requesting can be achieved currently via API with the utilization of a script that would toggle the configuration from one group policy to another during the specified hours.
This the the API call in question: https://developer.cisco.com/meraki/api-v1/update-network-appliance-vlan/
Hopefully this helps and let me know if you have any further questions.
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