Question
Could you please tell me how to ensure that the field, which is filled with the code from the users' table, retains the value of the original document creator and those who later edited it?
Answer
You need to use the previous value of the field, add the current user to it, and remove duplicates.
=: listUniq(list: $add)
add: listAdd(list: $#onfv; item: $#nu)