Where to assign Space Auditor role in HANA Cockpit?

In my HANA Cockpit I manage 4 systems in different hosts. Now I want to view XSA Logs for troubleshooting purposes. Whom my cockpit admin user is belonging to? where do I have to add Space Auditor role, how to know in which system? Do I need to assign the privilege in every tenant database?

thanks in advance!