Magento 2 restrict products by customer group extension allows store owners to restrict a specific product, categories, or even block a whole store from a particular customer group or to specific people.
Store owners restrict or manage products, catalog, CMS pages, product price, payment, and shipment methods for each similar group of the customer by Magento 2 customer group restriction method.
1. Block access to the particular customer group.
2. Enable/disable product view to the specific customer group.
3. Show Custom Message or Redirect to another Page.
4. Restrict Categories by Customer Groups.
5. Restrict Whole Store or Specific Products.
6. Provide selective access to the store catalog and hide some of the product pages.