how to enable the field Forecast Category in Redwood Sales Opportunity?

Summary:

Content (please ensure you mask any confidential information):

I want to add the field Forecast Category in Redwood Sales > Opportunity. What steps would I perform to enable it as the documentation ( ) does not go into much detail?

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

24C

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