people use this.
Secretary answers phone when she is there but when she goes for lunch she wants a different ...
Let's say odd holiday hours...
Can you really call a Lunch break " Odd Holiday Hours"?
For that she can really just put her phone on Away Mode, you can do this on Normal Phones / VoIP Phones / Assistant, generally everywhere.
Just for the sake of the Argument, lets say there's a feature where you can add a new kind of "Office Hours" Function that is called "LUNCH".
Everyday from 1:00 to 1:30 there will be a lunch break for everyone in the office, thus the "LUNCH" rule will take effect.
What happens to the people who dont want lunch and want to stay working from 1:00 to 1:30?
For that you would need to go deeper and add a feature in every extension's Myphone Portal where they can set their Lunch Break Hours, so during lunch they wont be disturbed / called.
Just putting a Button to set rules globally always causes problems / conflicts with users who do not want those rules to apply to them.