Start from here if you have not installed the Shared Contacts for Gmail extension for Chrome browser. If you already have it installed, then skip the first part.
Go to our chrome extension by clicking here and click on Add to Chrome
Once downloaded, it will appear in your extensions’ bar and you will automatically be redirected to Google Contacts page
You have successfully installed the Chrome extension of Shared Contacts for Gmail.
Go to Google Contacts and click on “Create label” to create a new label that you want to share. Enter your desired name and hit save on the popup. Or you can directly select an existing label that you want to share.
Add contacts in the new label. Once added, hover over the newly created label or the label you want to share and you will see a new share icon (as shown in the image below). Click on it.
After clicking on it, you will see a popup window, where you can enter the email address of the person(s) you want to share the label with
After you have shared the label, you will be redirected to permissions page where you can set the permissions for the shared contacts, as shown below
Set the permissions, click on the Add button and you are good to go!
Also, if you are interested in seeing how you can easily share your contacts directly from Gmail, then please read this article