How do I make a form read-only based on Scenario Years restriction

Summary:

I have Compensation Planning Forms (Manage Employee Salaries, etc.) that have 2 selections (Previous Budget Year and Current Budget Year )for the Page. These forms are editable. When a user select the Previous Budget Year, I want the whole form to be greyed out or read-only. But, if they select the Current Budget Year, users should be able to input or edit their numbers/values. What is the best way to do this?

Content (please ensure you mask any confidential information):

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

Service:		Planning and Budgeting Cloud
Application Type:		EPBCS
Version:		24.09.73

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