View your contacts in Contacts on Mac
View individual contacts and groups of contacts.
View individual contacts
In the Contacts app on your Mac, do any of the following:
See a contact: In the list of contacts, select a contact. Contact information is shown on the right.
See a contact in a separate window: Double-click a contact in the list, or select a contact and choose Card > Open in Separate Window.
Siri: Say something like: “Show me Jane’s information.” Learn how to ask Siri.
View groups of contacts
In the Contacts app on your Mac, do any of the following:
See groups: Choose View > Show Groups to see groups in the sidebar.
See the contacts in a group: Select a group or Smart Group in the sidebar.
See which groups a contact belongs to: Select a contact, then press and hold the Option key. Groups that include the contact are highlighted in blue in the sidebar.
See all contacts: Select All Contacts in the sidebar. This list compiles contacts from different accounts into one list.
See contacts in a network directory service: Select the directory in the sidebar, then search for a contact.
To change how contact names appear and are sorted in the list, or to not show suggested contacts found in other apps, choose Contacts > Preferences, click General, then deselect the related options. To learn more about the options, click the Help button 
at the bottom of the pane.
Tip: Quickly search your Mac for emails, messages, events, and documents that mention a contact: Control-click the contact in the list, then choose the Spotlight command.