I have a Jira Service Desk project with a couple of dozens customers who also are licensed Jira users and are involved in many other Jira projects.
For this particular project my manager asked me to limit the list of those who can access project portal to 5 customers. However I have no option to remove other 19 from the Customers list. Also nobody is in Project Settings->People.
Google proposes deleting profiles from Jira but it is not an option in my case - I just want to remove them from one project where their role is Customer.
How can I do that?