There is a "Number of featured accounts in a box" parameter in Basic settings>Accounts
There was no featured item in account type, so i enabled membership plan and then add an account type and Yes! there was a Featured settings> Featured Box Yes/no radio box.
I created a test one in admin demo but i did not understand what this account is and does.
There are also two columns in accounts table which are related to this account type: Featured and Last_show
Does anybody know about this account type or a manual?