How to Set Up MacBook Login Items
Login items are applications or documents that can be set to launch automatically as soon as a specific user logs in to your MacBook — for example, Apple Mail or Contacts. In fact, a user must be logged in to add or remove login items. Even an admin-level account can't change the login items for another user.
A user must have access to the Users & Groups pane in the System Preferences window to use login items. A user can be locked out of System Preferences, which makes it more difficult for login items to be deleted for that account.
Therefore, if the account is managed and access to System Preferences has been turned off, an administrator will have to enable the account's access to System Preferences, allowing the managed user to delete login items.
To set login items for your account, follow these steps:
Click the System Preferences icon in the Dock, and then click the Users & Groups icon.
Remember, only the administrator can access System Preferences.
Click the Login Items tab to display the settings.
The settings for Login Items will appear.
Click the Add button (with the plus sign) to display a file selection sheet.
The selection sheet will appear.
Navigate to the application you want to launch each time you log in, click it to select it, and then click Add.
Press cmd+Q to quit System Preferences and save your changes.
If the application is running at the moment, you can take an easy shortcut and avoid these steps: Simply right-click the application icon in the Dock and choose Open at Login from the pop-up menu that appears.
Login items are launched in the order in which they appear in the list, so feel free to drag the items into any order you like.