MAGENTO 2 CATALOG PERMISSION
This extension helps the admin to restrict permission to particular CMS pages of the website for any customer groups. Magento 2 Catalog Permissions extension allows the store admin to limit the permission of categories, CMS pages for specific customer groups. Admin can restrict permission to a particular catalog for a particular customer group.
https://www.cynoinfotech.com/product/catalog-permission-magento-2-extension/