To insert a link into your page, you can use the link wizard in the editor.
This configuration is on by default but you can disable it by unchecking the enableEnhancedLinkWizard configuration
This functionality depends on the data replication process. If you don't get the pages that you expect, you can perform a full replication manually. See How ComboStrap analyzes and replicates data ?
The first opening shows the standard list of pages in the actual namespace. This view is not customized because dokuwiki does not allow it.