1. From Setup in Salesforce Classic, enter Chat Buttons & Invitations in the Quick Find box, then select Chat Buttons &Invitations.
2. Click New.
3. Under Type, select Automated Invitation.
4. Click Save.
5. Copy the invitation code, and then paste it on each Web page where you’ve deployed Live Agent. Make sure that you paste the code in the area on the page where you want the invitation to appear.Tip Because the code changes with each modification, remember to copy and pastethe code each time that you update the invitation.