How to trigger an email to all queue members if no agent assigned after 24hrs of Request Creation

Summary:

I am trying for the requirement that when help desk request is created and no agents has been assigned with that request with in 24hours then Email should trigger to all queue members.

Please help me with this requirement.

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Version (include the version you are using, if applicable):

26A

Code Snippet (add any code snippets that support your topic, if applicable):