How to Set Up the Knowledge Base Integration
Once you have provisioned your customer portal application , your can take advantage of Live Assist's knowledge base search integration . This feature allows an agent to share content from the knowledge base with a few simple clicks.
Before an agent can do that, the feature must be enabled by an administrator.
The Microsoft Dynamics 365 Docs Site provides steps for: Set up knowledge management and these should be used to configured your Knowledge Base with details of your customer Portal.