I need help from a Macbook user.
I have some files on my laptop that I don't want other people to be able to open - Excel documents of my weight loss and finances.
Is there any way of making it so that you have to enter a password to open the documents?
I already have the laptop set so that you have to enter a password when you switch it on, but I want a password on individual documents as I let my housemate use it sometimes.