Customer-specific Confluence pages linked to Service Desk

We need to provide Knowledge Base articles to Service Desk customers and restrict which pages they can see.

This is because we support multiple product lines and the documentation for each is confidential - each documentation set can only be seen by specific groups of customers.

There appears to be no way to restrict the Confluence pages to certain groups (without giving each user a license).

One of the reasons we chose Service Desk for customer support was because of the ability to create a KB so a bit disappointing that we can't use it.

Same requirement as for CONFCLOUD-64798