My sister uses quickbooks where she works, and she suspects that someone is changing data in attempt to sabotage her work.
From what my sister told me, multiple people have access to the file, but she has no way of knowing who is purposely changing work that she has done

and even if she suspects someone, she doesn't have any proof to support her suspicion.
I'm not very familiar with quickbooks, but I was wondering if there was a way to know who last altered file, or is there something similar to excel, where you can track changes made since you last opened a file?