/ah open <menu> -player NotchIsCool -view Olzie12. This will open the menu for NotchIsCool but the contents of the menu will be viewed as Olzie12, this is good for checking other players auctions in a menu.
/ah open <menu> -view Olzie12. This will open the menu for the executor (if it isn't console) and will be viewing it as Olzie12.
playeroption to open it for that player.
pa.admin.openand is not suggested to give this to any normal player as they can just view menus as other players and edit their auctions.
searchoption allows you to automatically enter a search input when a menu (that allows searching) has been opened, there isn't a required permission like all the others. You will need to surround the value in speech marks. For example
/pa open <search menu> -search "farm". This will search for any auctions containing as its item