PR Firm Indicator

Hi Guru,

There's PR / Plan Order firm indicator , Once the's some changes the indicator will automatically firm up the PR.

Any how can we know , how can we trace as below :

1) Is this PR automatically firm by the system or Manually by Person ?

2) IF person who manually change it , who made the changes and firm the PR ? Can we trace the user name ?

3) Date for the changes related with the firm indicator ?

Thank you.