Limiting customers to only be able to see their own service desk to submit tickets

[Cindy Wu]

When a customer accesses their service desk portal, on the top left corner there is a link. When they click this link it allows them to access all of our other customer's service desks. How can we limit the customer to only be able to submit a ticket from their own service desk and not be able to click the link to access another customer's service desk? 

Any help would be greatly appreciated!

[Boris Berenberg - Atlas Authority]

https://community.atlassian.com/t5/Jira-questions/Service-Desk-allows-customers-to-see-other-customers-service/qaq-p/690120

I am guessing you two are from the same org?