So you were replying to a mail from @abhishek rather than posting here on on the community pages? Is that right as I know you started one topic, Linux-enthusiasts in/around Lucknow,India, but I can’t find another with that you have started on here and I usually check new ones out when I see them ?
No need to apologise, I was just trying to sort things out so you could get the right help from our community. 
As far as starting a new section for CAD on here I personally don’t think it is needed as it could covered in the software section.
Have a nice day and good weekend