Stop your kids deleting or moving your files on a shared Mac

Why it happens

When everyone uses the same login, everyone shares the same desktop, documents and settings. A child tidying up or exploring can delete or move your things without meaning to. A separate account keeps each person's files and settings apart, and a standard account can't change settings that affect the whole Mac.

How to fix it

1. Open the Apple menu, choose System Settings, and click Users & Groups in the sidebar.

2. Click Add User… and enter your own password when your Mac asks.

   Users & Groups›Add User…

3. Type your child's name and a password they can remember. Don't make the account an administrator, so it stays a standard account, then create it.

4. Log out, log in to your child's new account, and open Screen Time to set limits that fit them, such as time limits for apps. Turn on Lock Screen Time Settings so the limits need a passcode to change.

   Screen Time›Lock Screen Time Settings

5. Before you hand the Mac over, lock your own session with Control-Command-Q. Your child then logs in as themselves, and your files stay private.

Still not fixed?

1. Looking for something they deleted? Open the Trash in the Dock first. Select the file and choose Put Back to return it to where it was.

2. If it's not in the Trash and you use Time Machine, you can restore it from your backup. Without a backup, a file that's been emptied from the Trash is usually gone.

   General›Time Machine

3. To switch people quickly, add Fast User Switching to the menu bar. Each person picks their name from it without closing anyone's apps.

   Menu Bar›Menu Bar Controls›Fast User Switching

4. For younger children, you can also set up a child account through Family Sharing so you manage their limits from your own account.

   Family

5. If Add User… is greyed out even with your password, your Mac may be managed by a school or company. Ask them, or contact Apple Support if the Mac is yours.