We have an internal only JIRA instance for our software developement, Release Management, SCM, and QA teams. We would like to expose a JIRA instance to our customers to capture their requests. I understand that I could use security schemes to allow external customers access to only what they should see. However, we would prefer to have a separate JIRA instance for capturing customer service requests. Is this allowed as long as we don't exceed our jira-users max covered by our license?