Change the severity to high when Critical field is turned on

Summary:

There is a requirement from business to change the severity to high when "Critical" field is turned on.

Please confirm whether this change is feasible, If yes how can we do it.

Content (please ensure you mask any confidential information):

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

24D

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