Where do i set my resell passowrd?

i am trying to set a reseell password but it says go to the website but there is no reset passowrd button here.

 

If it's your first time reselling an item, a prompt should come up when you try to resell an item.

If your trying to change a resell password, you need to go to Options > 2nd Password Change. (This may possible work for 1st time change as well)