How to change the Reason of Change in the Manage Project Change Order

Summary:

Currently implementing the Manage Project Change Order and one of the requirements is to change the Reason of Change. Is it possible to change the LOV of the Reason of Change on the Manage Project Change Order? or if not likely to change is there any way to add some values on the list?

Content (please ensure you mask any confidential information):

We need to add/edit the Reason of Change LOV on the Manage Project Change Order

Version (include the version you are using, if applicable):24C

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