You do not have to be in the shop. The log is the record.
- Open Activity Logs.
- Read the user, the action, and the time.
- Open a row for the detail. A sale return shows its number. A stock edit shows who saved it.
- A late-night discount or stock change is the row to question. The cashier’s own login is what makes the name true. See Users and roles.

Next: Dashboard.