Holdings & demat

How to pledge shares to get margin (collateral margin)? How do I transfer my shares to another demat account? How do I pledge or unpledge shares? Where can I see my unlisted stocks? Can I sell pledged securities instantly without placing an unpledge request? Which stocks and mutual funds can I pledge with Rupeezy for collateral margin? Why can't I pledge some of my holdings? Why is my collateral margin reduced when I sell holdings?