Fine grained issue visibility configuration between users issues in a jira project?

[zzb]

Hello, i want to achieve the following:

In a Jira project ZZ I want user x to be able to view user y issues and vice versa.

Any tips on how to achieve this?

[Jeroen Poismans]

Hi there and welcome to the Atlassian Community!

You can achieve this with a combination of Automation and Issue security.

• You would have to create an Issue security scheme where you have security level for user X and user Y in project ZZ. 
• Automation which sets the security level when issues for one of both are created

Security schemes:

https://support.atlassian.com/jira-cloud-administration/docs/configure-issue-security-schemes/

Hope this helps!