I would like to know the possibility of showing the ticket that is only relevant to assigned user.
For example:
condition:
> Assignee-A is L1 support
> Assignee-B is L2 support
1) Assignee-A is taking care of a ticket as L1 support.
2) Assignee-A escalate the ticket to L2, that is Assignee-B, by changing "assignee".
3) Assignee-B only see a ticket which has been escalated from L1, that is Assignee-A.
4) Assignee-A are able to see all the tickets that is for L1 and L2.