site links

I have a key work ranked #1 on bing how do I get the site link extensions to appear? Thanks for any help

Hey Guys, I have a brand website which had six sitelinks when we search for the brand term on google. Now, the total number of sitelinks reduced from six to two. I would like to know how can i increase it ??? What all the tactics that i can rely on to get my sitelinks back. Note: I know that i...