How can I restrict a user group to a single confluence space?

Question

I have created a new user group and given them 'Can Use' permission

The users in this new group are not in any other group including Confluence-users

In the single Space permissions I have given this group permissions.

The problem is that under 'Spaces' 'Space directory' on the main menu bar they can still see and access Other Confluence Spaces.

Is there some overriding permission that I am missing?

Con Christov · Accepted Answer

Thanks Anup, The New group is not added to any of the other Spaces so has no Permissions.

I found the reason for what happened:

Linking a Space as a Knowledge base for a JIRA Service Desk gives the option "All active users and customers can access the knowledge base without a Confluence license" during the linking. If this is selected it will override any Global/Space/Group Permissions that you have set up for the Space and make it OPEN to all users.

To avoid this use the other option "Only licensed users who have access to the space" but be aware that if adding Customers via the JIRA Customer function they will not be considered "Licenced users" unless you manage their User details and add them to a Group or as individuals.