How to change effective date for an Assignment EIT

Summary:

Assignment EIT always picks up Employees Hire Date. But we need to update some assignment additional information based on change in assignment/Job or Position but effective date is not editable

Content (required):

How to make Effective date for an Assignment EIT editable. It always picks up Hire Date and is not editable.

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

23A

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