What I want to do is as follows.
I have a lot of projects in Jira for each customer's groups.
And, Each project's users and roles has 'Admin group' and each 'Customer group'. So, each customer groups(users) can only access their project.
e.g.
Project A: Admin group / A customer group
Project B: Admin group / B customer group
=> Customer in A customer group can only see Project A.
By the way, There are exceptions.
One or some of the issues in the Project A must be accessible to not only A customer group but also C customer group.
Is there a way to apply permission like above?
Can I apply the permission to one specific issue using Issue Security Schemes?
(If this way is possible, do I need to make a separate scheme to apply it to each different projects?) Or is there another way?