Hi Subrata,
It always makes me happy to see how the members are learning and using our website during this process. You became a member of DUG in October. I don't know how long you have been working with NAV before that. But I surely see a great improvement in the quality of your posts. Congratulations.
But I also see something you have not learned so far. And that is to post in the right forum on DUG. Almost after every post you have made, I had to move your post to the right forum. Many new members posts the first couple of questions to the wrong forum, but they usually learn it, when they get an email that their post was moved to a different forum. I will therefore ask you to read this post about "Which forum to post to". In general I have seen that you post most of your posts to the Technical Forum. That forum is only for technical questions, such as issue regarding installation on different OS's, servers, hardware etc. - NOT about development or how to use the applications. But please read the post, and the descriptions shown in the top of each forum.
I appriciate your membership and hope that you get help to the questions you have. And that you will continue as a member even when you don't have that many questions, but that you instead start help the new members. That's what this community is about!
Best regards,Erik