A. Individual usernames and passwords are really important when you use a practice software system. They allow you to audit what each individual user is doing. Knowing who did what and when is important from a medico-legal perspective. If all you can deduce is that it was a locum, and you have no idea which one, then you have a problem. So set up each locum as they start work in the practice with a username, perhaps firstname.surname and a password. When the locum leaves, disable their account and provide a new account to the next locum. Talk to your practice software company about how best to do this with your system.