System Preferences: You manage most security settings through the System Preferences application, located in the Applications folder. Here are the three panes inside System Preferences for managing most of the security settings. While you have many ways to fiddle with the security preferences on your Mac, we’re going to focus on the most important ones and highlight key differences from Windows. Keep your system up-to-date, be careful what you click on, and be careful about what software you install.

Select “Show fast user switching menu as,” then choose how the fast user switching menu looks in the menu bar.The core principles for safe Internet computing remain the same, whether you use a Windows PC or a Mac.

Click the lock icon to unlock it, then enter an administrator name and password.

Choose Apple menu > System Preferences, click Users & Groups, then click Login Options.

To switch from one user to another without logging out, users choose their name from the menu bar, and then enter a password or use Touch ID. If your Mac has multiple users, an administrator can turn on fast user switching to let more than one user stay logged in at the same time. If Fast User Switching is unavailable, it can be enabled by an administrator.

MacOS Sierra: Switch quickly between users

Enter your password, then click the arrow.

The fast user switching menu looks like either a user icon or the name of the current user, depending on the setting in Users & Groups preferences. Click the fast user switching menu in the menu bar, then choose your user name.

Mac os switch user