rsoft wrote:He wants that, when assign an issue to one of his developers, other developers cannot see that issue.
I understand what he is asking for
rsoft wrote:but he insist for that.
This is no reason to implement anything.
I am really interested to know why this is needed.
rsoft wrote:
So, can you advise me about changing source code for that?
Invest time in implementing a feature where I don't see that it makes sense until now?
I have hardly any time to support development that will never make it's way into MantisBT standard.
It can't be done in a few minutes. There are a lot of things to consider, e.g. roadmap page, SOAP API, relationships between issues, monitoring functionality, how to deal with issues where developer A has been assigned in a first step and developer B in second step, ....