How to Change Snow Leopard’s Accounts Preferences
Mac’s System Preferences pane, which you access by clicking the gear icon on the Dock, lets you manage your Accounts. Each user on your system has an entry in the Accounts list. The panes and settings here change, depending on the access level of the selected account.
Although the panes you see vary, here is a list of the available panes:
Password pane: Click in these text fields to enter or edit the account name, password, and password hint for the selected user.
You can set a different MobileMe account name and password for each user account from this pane as well. If you’re sharing your Mac with other users, each person can set up his or her own MobileMe account!
Picture well: From the Picture well — the square area to the right of the Account list — you can choose one of the thumbnail images provided by Apple to represent you, or drag a photo in from iPhoto. Click the well to display the thumbnails. Click Edit Picture to drag a new image from the Finder or take a video snapshot using your Mac’s iSight camera.
Login Items pane: The applications and documents that you add to this list launch automatically each time that the current user logs in to Mac OS X. To add an application, click the Add button (which carries a plus sign), navigate to the desired application and select it, and then click the Add button. (Alternatively, you can simply drag an item from a Finder window into the Login Items list.)
To remove an application from the list, click to select it and then click the Remove button (which has a minus sign). Each application can be launched in a hidden state, meaning its window doesn’t appear on the Desktop. To toggle an item as hidden or visible, enable the Hide check box next to the desired application. Change the launch order of Login Items by dragging entries in the list into the desired sequence.
Note that a user must be logged in to view and change the items on the Login Items.
You can even set up Login Items directly from the Dock! Control-click (or right-click) the desired Dock icon to display the pop-up menu and then click Open at Login.
Login Options pane: Click the button with the little house icon in the lower left to set global options that control how users log in. For example, you can choose to display a Name and Password field on the Login screen (which means that the user must type in the correct username) or a list of users, from which a person can select a user ID. (If security is a consideration, use the Name and Password option.)
You can also add VoiceOver spoken interface support at the Login screen, making it easier for physically challenged users to log in to this Mac.
If you choose, you can log in automatically as the selected user by clicking the Automatically Login <Username> pop-up menu and choosing your account. (This isn’t a particularly secure feature for MacBook owners, but convenient as all get-out.)
The Login Options panel also allows you to enable or disable Fast User Switching, and you can prevent anyone from restarting or shutting down the Mac from the Login screen by selecting the Hide the Restart and Shut Down Buttons check box.