I have example process with two task namely FirstTask(for all users) and SecondTask(assigned to admin).
In the first task I have first name and last name fields. The user starts the process fills the data and submit.
In second task I have comments field and displayed the previous task detail in read only mode(i.e., first name and last name using display value pallet element) then close the process. a. In this task suppose user has entered wrong spelling for the first name or last name. In my case admin should have authority to edit that first name and last name, write comments and close the process.