Assigning a customer group to a company is essentially the same as assigning a shared catalog. If Shared Catalog is not enabled in the configuration, a Customer Group — rather than a Shared Catalog — is assigned to a company.
On the Admin sidebar, go to Customers > Companies.
Find the company in the grid and click Edit in the Action column.
On the company page, scroll down and expand the Advanced Settings section.
Set the appropriate Customer Group.
The Customer Group list includes all existing shared catalogs, even if Shared Catalogs is disabled in the configuration.
Changing the customer group assigned to the company updates the profiles of all company members.
If the customer group assignment is changed from a shared catalog to a regular customer group, company members lose access to the shared catalog and the primary catalog becomes available to them from the storefront.
When prompted to confirm, click Proceed.