How exactly do you make the Assigned to field on the Incident form read only

[Arjun25]

Hello, please elaborate and let me know how exactly you would make the Assigned to field on the incident form Read only once the incident state is Resolved and Closed states? Please elaborate and let me know how

[Medi C · Accepted solution]

@Arjun25 

The best and secure way is to that through Access Controls (ACL)!

To allow write access to the assigned_to on incident, if state is not Resolved.

For Closed, I believe it should be already OOTB readonly until unless you have done customizations on its related ACL.