How do I allow my customers to view knowledge bases in JIRA service desk cloud?

[Fahad Akhtar]

I want the customer to able to access a few things in confluence. I have a lot of documents in confluence but I want them to see only a certain file list of them. Or will they be able to access all documents in the confluence knowledge base? These customers just have service desk customer project roles, nothing more. They are not part of the service desk users group nor the confluence users group. They can only see projects that they are service desk customers for. Please explain in detail on how to do this. Thank you. 

[Jack Brickey]

I would direct you to the Atlassian documentation. Here are a couple to get you started. 

overview-of-knowledge-base-access 

link-a-confluence-space-to-your-service-desk