These are not very clear. It is better if you give some background about why you are asking these questions. But I'll try to answer anyway.
Happydays11 wrote:if we going to new extension application on or after AR
till what date we can show the investment and employment.
Until your section 3C ended
Happydays11 wrote:if new extension application apply after 12 month of previous leave expire is there any additional requirements?
I am not even sure how you can do that.
Happydays11 wrote:is this application will consider with evidence submitted along with previous application notes because this time might need more clear evidence with supportive documents.
A fresh application is a new application that is on its own
My comments are in no way meant to be advisory. I have no professional knowledge of immigration. These are based on my own experience, convictions and personal interpretation of publicly available information.