Rejection reason lookup in pending action item

Summary: Hello, currently in Redwood while denying a document there is a drop down called Rejection Reason, can this field be hiiden or customized to add additional values. Business wants to add their own reason while denying the document. Please suggest.

Content (please ensure you mask any confidential information):

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

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