Can we limit the visibility of conversation messages in HR Help Desk?

Is there any way to limit the visibility of conversation messages , for now all the agents are able to see all the conversation created by any agent.

Please help me with this to limit the visibility of the conversation messages so that the agents can only see the conversations where:

• They have access to the Service Request (based on queue security or team member access)
• It was sent from/to them (or they were in copy)

Navigation : Home > Help Desk > Show more under quick actions > My Conversation > select 'All Conversations' from drop down.