In the Teams Admin Center, you currently have the ability to configure 'Business Hours' for an Auto Attendant.
I personally, and sure many others, would like to see the 'Business Hours' feature become available for Call Queues.
This could be added in such a way that, once the hours are configured, a sub-section becomes available such as "call action if outside of hours" that can also be configured to disconnect/divert to number/divert to mailbox/divert to group.
