To install the Freshchat messenger/widget on your website, 

1. Login to your Freshchat account as an Admin.

2. Go to Settings.

3. Select Web Messenger.

4. In the Getting Started tab, you can find your embed code for the Freshchat widget.

5. Copy and paste the code under Step 1 and Step 2 into your website's HTML source code, as given.

The Freshchat widget will now be available on your website and your visitors and customers can start interacting with you.